The National Rifle Association (NRA) is classified as a single-issue interest group that advocates for the protection of the 2nd Amendment of the Constitution of the United States and espouses for the rights of firearm owners. The NRA is the largest gun club in the free world, with interests in all aspects of shooting sports, as well as self-defense uses of firearms. The organization has influenced legislation, participated in or initiated lawsuits, and endorsed or opposed various candidates at local, state, and federal levels. The NRA Institute for Legislative Action (NRA-ILA) is its lobbying division, which manages its political action committee (PAC), the Political Victory Fund (PVF). The lobbying effectiveness of the NRA is attributed to its membership committed to the goals of the Association, which translates into communications with legislators indicating opposition to more restrictive gun regulations, and the NRAs avoidance of issues that might prove divisive to its supporters and concentration on a single issue which has full membership.