Following are statistics from the USDA Market News Livestock Export Summary of horses shipped specifically designated for slaughter from the southern borders of the United States to Mexico in 2019.
In 2019 (through December 28), 53,947 slaughter horses were shipped from the United States to Mexico for slaughter.
In 2018, 70,708 horses were shipped from the United States to Mexico for slaughter.
In 2017, 66,657 horses were shipped from the United States to Mexico for slaughter.
Reports of horses shipped from the United States to Canada for slaughter were not available.