Schumer goes off on Trump supporter at NYC restaurant, witness says Published March 27, 2017 New York Post Sen. Chuck Schumer, D-N.Y., caused a scene at a Manhattan restaurant when he began yelling at a wealthy and well-connected Donald Trump supporter that the POTUS is Âa liar. Schumer, the top Senate Democrat, lost his cool on Sunday night at Upper East Side restaurant Sette Mezzo, according to witnesses.