President Trump attacks Mark Cuban on TwitterPresident Donald Trump attacked Mavericks owner Mark Cuban in a tweet on Sunday morning, saying Cuban isn't "smart enough to run for president."SI Staff|Share on FacebookShare on XAdd us as a preferred sourcePresident Donald Trump attacked Mavericks owner Mark Cuban in a tweet on Sunday morning, saying Cuban isn't "smart enough to run for president."Published Feb 13, 2017 | Modified Feb 13, 2017SI STAFFShare on FacebookShare on XHome/NBA