New York City Mayor Michael Bloomberg continued his fight for tighter gun control Sunday morning on CBS's "Face the Nation," where he accused both presidential contenders, Romney and Obama, of ducking the issue.


“What do they stand for and why aren’t they standing up?” Bloomberg asked. “It’s time for both of them to be held accountable.”


Bloomberg also called for restrictions on high-powered assault weapons, such as the gun James Holmes allegedly fired into a crowded movie theater on Friday, killing 12 and injuring 70 more.


"The bottom line is weapons that are sold advertised as 'high capacity' and 'very powerful,' aren't weapons that are to be used in hunting, and they certainly aren't weapons to be used to defend yourself," said the mayor. "The Supreme Court said yes, we have the right to bear guns, but reasonable restrictions are constitutional."