Mexico put tariffs on American products ranging from steel to pork and bourbon on Tuesday, retaliating against import duties on metals imposed by President Donald Trump and taking aim at Republican strongholds ahead of U.S. congressional elections in November.

Mexico's response further raises trade tensions between the two countries and adds a new complication to efforts to renegotiate the NAFTA trade deal between Canada, the United States and Mexico.

American pork producers, for whom Mexico is the largest export market, were dismayed by the move.