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Senate Republicans lobbying Trump to stay in NAFTA
President Trump and Canadian Prime Minister Justin Trudeau
Trump's visit with Canadian Prime Minister Justin Trudeau last fall displayed the tensions over NAFTA. Photo: Jim Watson / AFP / Getty Images

Senate Republicans have strategically revved up their attempt to convince President Trump to not withdraw from NAFTA. Some senators and aides say he may not have understood how popular it was with the caucus until recently, and are encouraging him to focus instead on improving it.

Why this matters: This is Congress’s clearest shot at saving the trade agreement. If Trump decides to withdraw, Congress probably couldn’t stop him, and both the legal and economic consequences are extremely unclear.