Former Mexican President Vicente Fox is making his position clear on Donald Trump's pledge to make Mexico pay for a wall along the U.S.-Mexico border.
"I'm not going to pay for that f***ing wall. He should pay for it," Fox told Fusion's Jorge Ramos in an interview published Thursday.
Trump quickly responded on Twitter.
"FMR PRES of Mexico, Vicente Fox horribly used the F word when discussing the wall. He must apologize! If I did that there would be a uproar!" he tweeted.
