Gun rights advocates have remarkable political influence. The gun lobby, for example, plans to spend $40 million on the presidential campaign alone.13 As a sign of the NRA's political power, 250 house members and 55 senators, including Vice President Cheney, signed an amicus curiae brief urging the Supreme Court to find an individual right to bear arms. Legislatures have also actively blocked efforts by mayors to control gun violence. The federal Protection of Lawful Commerce in Arms Act (PLCAA) creates broad immunity from liability, requiring “immediate dismissal” of all current and future actions against gun sellers and manufacturers. Pursuant to the PLCAA, a federal appeals court recently dismissed New York City's claim that the industry marketed guns to legitimate buyers knowing they would, through various avenues—eg, gun shows, private sales without background checks, and straw purchases—end up in illegal markets.14 Remarkably, Congress actually blocks access to a federal database that traces guns used in crime back to particular dealers, even though blocking access to the database can have no self-defense purpose.15 Furthermore, 30 states offer tort immunity for the firearm industry, and 40 states preempt cities from enacting gun control laws.4