Chuck Schumer has canceled book tour events this week because of security concerns amid a backlash over his support for Republicans in preventing a government shutdown last week. "Due to security concerns, Senator Schumer's book events are being rescheduled," a statement said. Schumer's book, "Antisemitism in America: A Warning," is scheduled to be released on Tuesday. He faced a backlash from within his own party last week after backing a Republican-led stopgap bill to avert a government shutdown. Schumer's book, "Antisemitism in America: A Warning," is scheduled to be released on Tuesday. This is a breaking news story"more to follow.