American Israel Public Affairs Committee

The American Israel Public Affairs Committee (AIPAC), by its own description and that of many analysts, is among the strongest influence groups in the US. "From a small pro-Israel public affairs boutique in the 1950s, AIPAC has grown into a 100,000-member national grassroots movement described by The New York Times as "the most important organization affecting America's relationship with Israel." Its motto is "America's Pro-Israel Lobby."

It states that receives no financial assistance from Israel, from any national organization or any foreign group. AIPAC is not a [[political action committee[[ in the regulatory sense, and d oes not rate, endorse or contribute to candidates. Because it is a lobby, contributions to AIPAC are not tax deductible.

In the John Mearsheimer and Stephen Walt book, The Israel Lobby and U.S. Foreign Policy, it is considered the heart of the broader Israel lobby.