"The Second Amendment is one of the clearest statements of right in the Constitution," Benjamin Wittes, a guest scholar at the center-left Brookings Institution, acknowledged in a discussion Monday. "We've had decades of sort of intellectual gymnastics to try to make those words not mean what they say."

Wittes, who said he has "no particular enthusiasm for the idea of a gun culture," said that rather than try to limit gun ownership through regulation that potentially violates the Second Amendment, opponents of gun ownership should set their sights on repealing the amendment altogether.