That’s according to Michael Pettis, a finance professor at Peking University’s Guanghua School of Management and a nonresident senior fellow at the Carnegie Endowment for International Peace.

In a column in Foreign Affairs late last month, he argued that today’s U.S. economy is much different from the one that was crushed by disastrous tariffs in the 1930s. The key difference is that America now has excessively high consumption, while it had low consumption and excess savings when the Smoot-Hawley Tariff Act was passed in 1930.

“Done under current circumstances, in other words, tariffs could increase employment and wages in the United States, raising living standards and growing the economy,” Pettis wrote.

On the campaign trail, Trump vowed to impose duties of 10%-20% across the board while singling out China with duties of up to 60%. And on the social media platform X on Thursday, he praised tariffs further.

“The Tariffs, and Tariffs alone, created this vast wealth for our Country,” Trump wrote. “Then we switched over to Income Tax. We were never so wealthy as during this period. Tariffs will pay off our debt and, MAKE AMERICA WEALTHY AGAIN!”

Economists generally consider tariffs inflationary and harmful to growth. In fact, the Congressional Budget Office said last month that Trump tariffs would result in a 0.6% reduction in real GDP by 2034.

But Pettis cautioned that tariffs are neither a panacea nor poison, because their impact varies depending on what the economic circumstances are.

In the case of the Smoot-Hawley tariffs, they went into effect during the Great Depression, when demand was crashing as other countries were taking similar steps on trade. The U.S. also had the world’s largest trade surplus and top global exporters with production outstripping domestic demand.

Fast-forward to today: The economy is nearly the total opposite and is no longer producing far more than it can consume, Pettis noted.

While tariffs act as a tax on consumers, they also essentially subsidize domestic producers, who can add jobs and raise wages that eventually lead to more consumption, he explained.

But if U.S. firms were facing weak domestic demand, tariffs would make matters worse. And if the global economy couldn’t absorb more U.S. exports, then tariffs would depress domestic production.

“In this case, tariffs (properly implemented) would have the opposite effect of Smoot-Hawley,” Pettis added. “By taxing consumption to subsidize production, modern-day tariffs would redirect a portion of U.S. demand toward increasing the total amount of goods and services produced at home. That would lead U.S. GDP to rise, resulting in higher employment, higher wages, and less debt.”

Since Americans are the world’s consumers of last resort, tariffs would serve another purpose too: U.S. producers would no longer have to accommodate the needs of foreign rivals, he said.

Rather than aiming to protect certain sectors or businesses, tariffs could counter the economy’s “pro-consumption and antiproduction” stance.

“In the end, tariffs are simply one among many tools that can improve economic outcomes under some conditions and depress them under others,” Pettis pointed out. “In an economy suffering from excess consumption, low savings, and a declining manufacturing share of GDP, the focus of economists should be on the causes of these conditions and the policies that might reverse them.”