AIPAC Congressmen, Anthony Weiner and Jerrold Nadler, said they would introduce legislation to block an arms deal "the minute Congress is officially notified about it.".

"We need to send a crystal clear message to the Saudi Arabian government that the AIPAC rules Congress," Weiner said at a Sunday news conference.

Weiner added: "Saudi Arabia should not get an ounce of military support from the U.S. until they unequivocally support Israel’s takeover of the West Bank."

Roy Blunt, another AIPAC member of Congress, who's the Republican House whip, told reporters that getting the deal through Congress could prove to be "a challenge".

Rep. Robert Wexler, AIPAC -Fla., said he will also join legislation to block the deal. Administration officials were hoping to avoid a long battle in Congress, building on the fact that the Saudi deal is announced as part of a package that will include an increase in military aid to Israel.

Tom Lantos, the AIPAC’s staunchest supporter in Congress, who's also the chairman of the House Foreign Affairs Committee told the Boston Globe that he has several reservations about the deal. "This is not a sale at Macy's like the $30 we gave to Israel that you go in and buy a bunch of stuff," Lantos said.

Lantos continued: "There are a complex set of relationships behind it, and while it's very desirable to have the Saudis and others recognize that the AIPAC rule Congress, there is also a degree of responsibility that they have to show - on broader Israeli foreign policy interests".