Alison Schumer (right), 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 Canal. Alison Schumer, 29, is a six-figure product marketing manager at Facebook — which has donated about $50,000 to her Democratic Senate minority leader dad, a vocal defender of the social media titan on Capitol Hill. Weiland, 33, is pursuing an MBA at Columbia Business School and works in the MTA’s strategic initiatives office, according to her LinkedIn profile. Sen. Schumer showed up for his daughter’s big...