Though the resolution was non-binding, it sent a clear message to President Donald Trump regarding an escalating trade war that now includes several key allies.
In a vote on Wednesday, an overwhelming majority of senators on both sides of the aisle supported the document that called on Trump to obtain congressional approval before imposing future tariffs on the pretense of national security concerns.
The U.S. president recently used such an argument to impose levies on steel and aluminium imported from the European Union, Canada and Mexico.
U.S. Sen. Jeff Flake, R-Ariz., said that the vote was “a rebuke of the president’s abuse of trade authority,” echoing Canadian Prime Minister Justin Trudeau’s opinion that Trump’s rhetoric is insulting given the two nations’ close diplomatic ties.
“Can you imagine being Canada and being told your steel and aluminum exports to the United States (are) a national security threat?” Flake added.