New York City has some of the toughest gun laws in the nation. But Monday’s mass shooting showed their limits, security experts said.

Gov. Kathy Hochul called for advancing gun control legislation in Congress, where Republican opposition has repeatedly doomed attempts at reviving a federal ban on assault weapons.

A shooting in a Manhattan skyscraper late on Monday that killed four people, including a New York City police officer, has been marked by statements of sorrow and prayers for the victims' families, but no sign of the Republican-controlled U.