The , hazard of US tariffs , on Canada and Mexico seems to have abated for today. Both nations made mainly symbolic commitments to border security, which led to Trump’s decision to postpone the tariffs by one month. This suggests that the taxes may be delayed or completely canceled.
This is the least negative results. Although the majority of the world is euphoric, the simple knowledge that Trump may change his mind and impose tariffs on America’s important allies and trading partners at any time will chill business investment.  , Bloomberg information:
Over a furious 72 hours, President Donald Trump’s danger of punishing fresh tariffs on Canada, Mexico and China …sent manufacturing organizations scrambling for cover…Even after the senator put a , one-month hold , on the Mexico and Canada tasks on Monday, professionals are still very much on watch for extra taxes …
It was …frantic for Randy Carr, who runs , World Emblem, the biggest global manufacturer of emblems and patches …” We have had to suspend every capex project we have for the next 24 months until we better understand the trade situation”, Carr said… World Emblem also paused hiring plans, said the executive, whose company has 1, 300 employees between production bases in the US and Mexico. ” It’s suggestive of the changes we had to make during Covid-19″.
Tariffs benefit private manufacturers by shielding them from foreign competitors, but they also hurt them by raising the price of imported components. One of the two main issues with taxes is that they raise customer costs, which is the other.
Does this imply that tariffs are usually unfair? Some people praised the benefits of free trade in response to Trump’s turbulent tariff announcement, even some Democrats who are typically wary of liberal arguments.
But after years of underdevelopment, for fanatic explanations are improbable to carry much weight. Any ideological blanket denunciation of tariffs will likely face that deep reservoir of ( somewhat justified ) anger. It seems like free trade was America’s sucker’s bet.
In reality, there , are  , some reasonable explanations for when taxes may be useful. These concepts have been the subject of numerous documents written about them that economists have known for centuries. The reasons for tariffs are often discussed in public conversations because economists frequently have an overt attachment to the concept of free trade.
I therefore decided to go over some of these. But notice that all of them are claims for , targeted , taxes, instead of the large, across-the-board tariffs that Trump threatened against Canada and Mexico.
Federal safety concerns
The most important rationale for taxes, as I see it, is national security. If a war breaks out between the US and China, the US will own to create a whole lot of munitions and weapons quite fast— especially drones, ships, missiles, and so on. It’s crucial to have existing human industries that can be immediately repurposed for defense functions in order to accomplish that, just like automakers built planes and vehicles in World War 2.
A nation’s manufacturing base will collapse and die in a lengthy standard modern war against a rival nation. For instance, if the US finds itself without battery factories — both on its own soil or in a secure area of the country — it won’t be able to produce the FPV drones that have come to be the standard tool on Ukraine’s battlefields. That could be devastating. Therefore, it is important to keep some power production power in the US, Canada, and/or Mexico.
Today, Xi Jinping knows this. One thing he can do is try to crush the US producing industries by outpacing them with targeted surges of cheap exports, as he almost certainly does if he wants to undermine the US. It’s quite possible that this is one motivation behind China ‘s , sudden wave of manufactured exports, which is being promoted with below-market bank loans, government grants, and a host of other laws.
Taxes are a means of preventing this forced underdevelopment method. If Xi unexpectedly decides to flood America with affordable Chinese batteries, the US may respond very quickly by raising taxes on Chinese chargers, canceling out the impact of China’s incentives. In reality, this is what Biden did last year, when , he levied extremely large tariffs , on a variety of China’s proper business.
However, take note that Trump’s tariff proposals for Mexico and Canada don’t exactly suit this technique. Most important, putting taxes on US allies doesn’t protect against forced underdevelopment by China, in truth, it makes the problem , worse, by disrupting North American supply stores and raising prices for US manufacturers.
It also makes the US dollar value, making American imports less aggressive. This is a common reason why intended tariffs like Biden’s are more powerful than large, across-the-board tariffs like the ones Trump is threatening.
In fact, dollar appreciation is exactly what happened in 2018-19 after Trump’s initial tariffs, and it’s exactly what’s happening now:
So if you want tariffs for national security reasons, Trump’s proposed tariffs on US allies are  , exactly the wrong kind.
Our companies vs their companies
Economists don’t typically think about national security, instead, they tend to think good policies are those that produce more growth, more employment, and so on. And if those are your objectives, there are definitely still some reasons why tariffs might be a good thing— at least, from a single nation’s perspective.
The most common reason is all about , national champions. Real-world markets aren’t perfectly competitive — some big companies make a ton of profit, by leveraging what economists call , increasing returns to scale.
Increasing returns to scale are just anything that gives big companies a cost advantage over smaller ones — maybe network effects, or big fixed costs, or a” superstar” effect that draws in top talent, etc. In a world of increasing returns, the winning companies make a lot of profit, and smaller companies don’t.
A country might, therefore, be able to increase its wealth by using tariffs to guard its own “national champion” companies. The idea is basically to block foreign companies ‘ domestic markets by using tariffs to lower their scale.
This will make it easier for your own nation’s national champions to outshine their international rivals, resulting in greater profit for them on the market. This is called” strategic trade” policy.
James Brander and Barbara Spencer , pointed out , this argument for tariffs back in the 1980s. Paul Krugman, who helped develop the leading theory of increasing returns and trade,  , summarized , their work on this topic in 1987:
If a nation can somehow make sure that the lucky firm that receives the most money is domestic rather than foreign, it can raise its national income at the expense of other nations. James Brander and Barbara Spencer uncovered in two well-known papers that, when appropriate, government policies like export subsidies and import restrictions can deter foreign companies from entering lucrative markets.
Government policy here serves much the same role that” strategic” moves such as investment in excess capacity or research and development ( R &, D) serve in many models of oligopolistic competition —hence the term” strategic trade policy” .…]A ] t least under some circumstances a government, by supporting its firms in international competition, can raise national welfare at another country’s expense.
In fact, there’s some evidence that free trade can make a country poorer by destroying its national champions. This is from , Sampson et al. ( 2022 ):
Import liberalization lowers import costs and boosts competition. However, with scale economies, import liberalization can also reduce domestic industry’s productivity by reducing its scale, leading to lower exports.
Evidence from the permanent normalization of US trade relations with China in the early 2000s, as this column demonstrates, demonstrates that increased Chinese import competition did indeed reduce US exports through this channel, implying the existence of industry-level economies in the US.
The point is that America would have been a little wealthier if the US had started importing tariffs to protect some very oligopolistic industries from Chinese competition in the early 2000s.
But again, this argument for tariffs doesn’t apply to Trump’s recent efforts. First of all, it only applies to those sectors where there are few winners and a lot of profits to be made. That implies, again, that , targeted , tariffs are the way to go.
Broad, across-the-board tariffs will dilute the effect, through exchange rate appreciation. Trump would have imposed tariffs on agriculture, which is a highly competitive sector with few profits to compete for. Simply put, this strategy does not align with the theory of strategic trade.
Second, you probably don’t want to start a trade war with your most significant allies and trading partners if you want your national champions to be able to scale up. They will almost certainly retaliate, denying market access to your own top companies.
If their attempts to buy off Trump with symbolic concessions failed, Canada and Mexico would likely resort to retaliation measures. The top companies in America would lose market share and suffer in their fierce competition with Chinese rivals as a result.
And finally, if you want to increase your national champions ‘ scale, you can probably get a lot more mileage out of , export subsidies , than tariffs. Tariffs can hurt national champions by denying them access to cheap production inputs, export subsidies, although they cost more in fiscal terms, don’t have this problem.
The American way of protecting the infant industry
In this recent blog post by Anthony Pompliano, many people have questioned my response to the pro-tariff arguments. Please click on the link.
Some of Pompliano’s arguments in this piece are simply bad. For example, he cites the factory construction boom and , the reshoring of the solar industry  , as examples of American industrial successes driven by tariffs.
However, in both of those cases, while tariffs might have been a significant factor, we didn’t really see much progress until Biden introduced industrial policy through the CHIPS Act and the Inflation Reduction Act.
Pompliano also contends that tariffs are less deflationary than income taxes, which is generally true if the subject is the same tax rate. But if you’re talking about raising a set amount of , revenue , from either income tax or tariffs, then the tariffs are almost certainly much worse.
This is because tariffs are a lot easier to , avoid , than income taxes, you just buy similar products made elsewhere. Because tariffs are relatively easy to avoid, they don’t raise a lot of revenue. And so if you want to use tariffs to raise, say,$ 1 trillion a year for the US government, you’re going to need to set the tariff rates , very , high. And that will be very distortionary.
But anyway, Pompliano’s strongest argument is that tariffs for infant industries were useful for America’s economic development back in the 19th century:
Tariffs are widely credited as , an essential tool , for the success of the Industrial Revolution, which created the American economy we know today…Historical figures like George Washington, Thomas Jefferson, Henry Clay, James Monroe, Abraham Lincoln, William McKinley, and Theodore Roosevelt were all outspoken supporters of tariffs as a necessary tool for America to thrive. Give us a protective tariff, and we shall have the greatest nation on earth, according to the well-known Lincoln quote on tariffs.
This is what economists refer to as an “infant industry argument.” Basically, American leaders in the early days of the republic wanted to promote the creation of new industries in the US Alexander Hamilton wrote his famous ,” Report on Manufactures”  , in 1791.
He claimed that tariffs would enable domestic champions to have the same level of scale as foreigners, which was in line with the strategic trade theory developed a century later. Hamilton added that shielding brand-new American industries from competition would give them more time to “learn” about how to compete with established foreign rivals.
In some cases, infant industry arguments are plausible; Pompliano certainly exaggerates when he claims that tariffs built America, but they were likely a result of helping some important American industries start their own businesses rather than being replaced by floods of British imports.
But here too, the specifics of Trump’s plans are at odds with the economics. Once again, the economic argument is for , targeted tariffs , in very specific cases— in this case, new industries facing competition from big foreign incumbents. Trump’s across-the-board tariffs are almost entirely targeting , non-infant , industries. ( Also, in general,  , import quotas are more helpful , for infant industries than tariffs. )
Two more speculative arguments
So those are the three basic arguments in favor of tariffs — national security, national champions, and infant industries. All of them are pretty solid arguments, though they all imply that Trump’s preferred approach to tariffs is highly suboptimal. However, there are still some intriguing tariff debates that merit discussion.
One of these is , Michael Pettis ‘ theory , that tariffs on China will help to correct global trade imbalances, and could force China to change its economic model to a more consumption-focused one. I discussed this concept here.
Basically, I think this makes sense as a , China-specific political-economic , argument. The idea is that Chinese companies will quickly become unprofitable ( due to overproduction and over competition ) if tariffs force them to concentrate more on their domestic market.
This unprofitability could prompt China’s government to reduce its subsidies for industrial overproduction. That’s my personal interpretation of Pettis ‘ ideas, and I’m not sure how plausible it is, but it’s certainly an interesting thought. I would note, however, that this is a purely , China-specific , idea, rather than a justification for tariffs on Mexico and Canada.
Another theory,  , courtesy of Sam Hammond, is that tariffs are the first step in a forced de-dollarization of the global economy:
The US intentionally undermines the stability of the dollar as a trade currency by imposing universal tariffs, which I believe is the case because disruption forces other nations to consider reducing dollar holdings or considering alternative reserve arrangements, thereby enabling a monetary reset.
I don’t put much credence in this theory. The reason, as I’ve explained a number of times, is that tariffs make the US dollar more expensive, not less.
Anyway, I believe that national security, as well as the traditional economics justification for tariffs, such as strategic trade and infant industry protection, are still the strongest arguments in favor of tariffs. And every single one of them raises doubts about the tariffs Trump is proposing. Trump’s threatened tariffs on Canada and Mexico are incredibly unlikely to be those that are, even if some tariffs are acceptable in some circumstances.
This , article , was first published on Noah Smith’s Noahpinion , Substack and is republished with kind permission. Become a Noahopinion , subscriber , here.