"My message to Democratic leaders: Ban super PACs from Democratic primaries NOW." AIPAC is affiliated with United Democracy Project, a super PAC that says it works to help defeat "detractors — both Republicans and Democrats — of the U.S.-Israel relationship," its website states. "Right now, the Democratic Party has the power to prohibit super PACs from participating in its primaries. "I urge you to take action and make clear that the Democratic Party will no longer maintain this corrupt system." CLICK HERE TO DOWNLOAD THE FOX NEWS APPIn May, Sanders and Rep. Summer Lee, D-Pa., introduced the Abolish Super PACs Act, which would cap individual contributions to super PACs at $5,000 and effectively eliminate them.