Gov. Andrew Cuomo on Tuesday signed into law a new package of gun regulations intended to fortify New York's existing assault weapons ban, limit the number of bullets in magazines and strengthen rules that keep the mentally ill from owning firearms. The regulations are the nation's first since last month's massacre in Newtown, Connecticut, where a gunman killed 27 people, including 20 young children at an elementary school. Cuomo, a self-described gun owner, said the tragedy had spurred lawmakers to action and called the legislation a "common sense" measure.