Canada's dairy industry was targeted by U.S. President Donald Trump on Tuesday during a speech made to factory workers in Wisconsin.

 

Trump singled out Canada's dairy supply management system, which he says hinders U.S. farmers.

 

Dairy producers in Wisconsin and New York have been lobbying the U.S. government for action after Canada recently decided to impose import taxes on ultra-filtered milk, which is a liquid concentrate used to make cheese. The milk had been duty-free since NAFTA was introduced in 1994, but the Canadian government changed the rules after hearing complaints about prices from dairy farmers in Ontario.