A defiant Senate Minority Leader Chuck Schumer vowed that he will not step down from his leadership role any time soon while strenuously defending his decision to vote against blocking a GOP bill to avert a partial government shutdown. Schumer (D-NY), 74, who has been facing a progressive revolt over his shutdown vote earlier this month, reiterated that he “did this out of conviction” and fired back at detractors such as former House Speaker Nancy Pelosi (D-Calif.) “Look, I’m not stepping down,” Schumer told NBC’s “Meet the Press” in a pre-taped interview that aired Sunday. “I did it out of...