WATCH: U.S. Trade Representative Jamieson Greer, speaks about Canada’s USMCA violations involving dairy, wine, and spirits, says the U.S. is “at the end of its rope” and may take “enforcement action.”

U.S. Trade Representative Jamieson Greer, speaking at a government hearing about Canada violating the USMCA on dairy, wine, and spirits, signals that the U.S. is “at the end of its rope” and may need to take “enforcement action.”