With roughly 1.75 million members, Christians United for Israel (CUFI) calls itself the largest pro-Israel organization in the United States. At their annual summit in Washington, CUFI leader David Brog said, “we have to speak out and be a voice for Israel”.
http://www.jns.org/latest-articles/2014/7/22/while-gaza-conflict-rages-cufi-summit-rallies-christian-support-for-israel#.U88rXSh8uTA=