Story highlights Former Mexico 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 posted Thursday.

Washington (CNN) 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.

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! — Donald J. Trump (@realDonaldTrump) February 25, 2016

Fox, who was president from 2000-2006, also pushed back on Trump's claim that he was winning support among Latinos, after entrance polls at Tuesday's Nevada caucuses showed him winning Latino Republican caucusgoers.

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