Alison Schumer, the younger of Sen. Chuck Schumer’s two daughters, married Elizabeth Weiland on Sunday in Brooklyn, with the couple posing for wedding photos on a bridge over the toxic Gowanus . The white-dress-clad lovebirds, each clutching a mixed bouquet — with Alison Schumer wearing shoes as green as the Superfund site below them — held hands and shared a tender glance on the rust-flecked Union Street Bridge, which has become a popular backdrop for photos. Oh, gak.