That's interesting... I understood that all F150s sold in the U.S. were built at the Ford plant in Claycomo, Missouri or in Dearborn, Michigan, with domestic parts content ranging between 75% and 90%. I didn't research Lightnings...

I did note on one of the sites that came up on your google searches that F150's made to be sold to the Mexican Market were made in Mexico. But, your searches are for "ford plant in canada" and "ford plant in mexico" which seems rather beside the point, since my question related specifically to F150's (that compete with your Tundra), not all vehicles made by Ford.