Trump repeatedly benefits from the ignorance, stupidity and tendency to short term memory of the American people. Trump's tariffs hurt American farmers so badly he was forced to give them billions of dollars to compensate them and to buy their votes in 2020:

Claire McCaskill
@clairecmc
Hoping farmers that were screaming at me about Trump's tariffs last time remember what happened. And the "fiscal conservatives" remember his very expensive taxpayer bailout for their tariff losses.

Tariff Aid To Farmers Cost More Than Nuclear Forces

The Trump administration gave more taxpayer dollars to farmers harmed by the administration's trade policies than the federal government spends each year building ships for the Navy or maintaining America's nuclear arsenal, according to a new report. A National Foundation for American Policy analysis concluded the spending on farmers was also higher than the annual budgets of several government agencies. "The amount of money raises questions about the strategy of imposing tariffs and permitting the use of taxpayer money to shield policymakers from the consequences of their actions," according to the analysis.

After a series of tariff increases on Chinese imports, the government of China retaliated against U.S. exporters, as predicted by trade analysts outside of the administration. As a result, U.S. exports, particularly of agricultural goods, dropped significantly. "Losing the world's most populous country as an export market has been a major blow to the [U.S.] agriculture industry," reported the New York Times in August 2019. "Total American agricultural exports to China were $24 billion in 2014 and fell to $9.1 billion last year, according to the American Farm Bureau." In 2018, U.S. farmers' soybean exports to China declined by 75%, according to the U.S. International Trade Commission.

To shore up political support from farmers, Donald Trump approved increasing amounts of government aid to farmers harmed by the trade policies that the Trump administration itself initiated. Trump was open about the purpose of the payments. "I sometimes see where these horrible dishonest reporters will say that oh jeez, the farmers are upset,'" he told attendees of an Illinois farmer show in August 2019. "Well, they can't be too upset, because I gave them $12 billion and I gave them $16 billion this year. . . . I hope you like me even better than you did in '16."

From the above link:

Table 1: Taxpayer Cost of Trade-Related Aid to Farmers and Other Federal Programs

PROGRAM TAXPAYER COST

Trump Aid to Farmers $28 Billion
Department of State $26.3 Billion
Navy Ship Building (annual avg.) $22 Billion
Nuclear Forces $21.8 Billion
NASA $19.8 Billion
Children's Health Insurance $17.3 Billion
TANF $16.7 Billion
Department of Commerce $8.6 Billion
EPA $8.1 Billion
Judicial Branch $7.8 Billion
National Science Foundation $7.2 Billion
Legislative Branch $4.7 Billion
Food Safety and Inspection Service $1.3 Billion
Agricultural Research Service $1.1 Billion
Forest Service $0.4 Billion

I posted earlier on how Trump's tariffs in the past cost the US taxpayer $28 billion dollars so he could compensate farmers for the finanical damage his tariffs while presidient did to them. Well, now data is coming out on how his propsed tariffs will hurt farmers if he gets re-elected:

Pennsylvania farmers could lose $111 million in soy exports, $50 million in corn exports, $22 million in beef exports and $20 million in wheat exports, according to the analysis from the University of Illinois Department of Agriculture and Consumer Economics.

"These new studies literally show that Trump's tariffs will put Pennsylvania farmers out of business," Chris Gibbs, an Ohio corn and soybean farmer and president of Rural Voices USA, said in a statement Tuesday. "Exports are vital for Pennsylvania farmers and they cannot absorb the sharp fall in exports and prices these studies foreshadow."