Farmers’ Anger at Trump Tariffs Puts Republican Candidates in a Bind

As President Trump moves to fulfill one of the central promises of his campaign — to get tough on an ascendant China — he faces a potential rebellion from a core constituency: farmers and other agricultural producers who could suffer devastating losses in a trade war. Mr. Trump’s threat to impose tariffs on Chinese goods came with a presidential declaration that trade wars are good and easily won. But the action has injected damaging uncertainty into the economy as Republicans are already struggling to maintain their hold on the House and the Senate in a difficult election year.While the battle for control of the House will be waged in large part in the suburbs, rural districts in Southern Illinois, Iowa, Arkansas and Missouri could prove important. And control of the Senate could come down to Republican efforts to unseat Democrats in North Dakota, Indiana, Missouri and Montana — all states staring down the barrels of a trade war’s guns.