Ex-Mexican Prez Not Impressed With Trump's Border Wall Plan Mexico will not be paying for any 'stupid,' 'useless' wall By Evann Gastaldo, Newser Staff Posted Feb 8, 2016 4:45 PM CST 191 comments Comments Mexico's former President Felipe Calderon speaks at a joint press conference one day before the Summit of the Americas in Panama City, Thursday, April 9, 2015. (AP Photo/Arnulfo Franco) (Newser) – Donald Trump isn't the only one who can throw around words like "stupid," "useless," "crazy," and "ignorant." Trump, of course, has claimed during his presidential campaign that not only will he get a border wall built if he's elected, but Mexico will pay for it. However, asked about that idea at a conference Sunday, former Mexican president Felipe Calderón had this to say, per NBC News: "We are not going to pay any single cent for such a stupid wall! And it's going to be completely useless." "The first loser of such a policy would be the United States," Calderón continued during an interview with CNBC. "If this guy pretends that closing the borders to anywhere either for trade [or] for people is going to provide prosperity to the United States, he is completely crazy." Calderón also expressed bafflement that Trump is a serious candidate in the US, noting, "No offense, no offense to America. So Donald Trump … is ambitious but not exactly very well-informed man, I don't want to say ignorant, but he is not very well informed."