PENNSYLVANIA: The state requires background checks for handgun buyers, and requires gun dealers to obtain a state license. This ranking of states with the strictest gun laws is from the Brady Campaign, a nonpartisan anti-gun violence group. Here, protesters in Philadelphia participate in the Silent March to Protest Gun Violence in July 2000.
The Wisconsin Sikh temple shooting elicited renewed calls for gun control, but surveys show it's not a pressing issue for the US public. Obama and his spokesman talked only of combatting violence.