A Political Action Committee (PAC) is an organization that campaigns for or against particular political candidates, initiatives, or legislation.
At the federal level, an organization becomes a PAC when it receives more than $1,000 according to the Federal Election Campaign Act.
Pro-Israel PACs include: NorPAC, JStreet, National Action Committee, Citizens Organized, World Alliance for Israel and the Republican Jewish Coalition.
Pro-Arab PACs include: Arab American Leadership, Iranian American PAC, American Task Force on Lebanon Policy and Council on American-Islamic Relations
Sources: Center for Responsive Politics