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And a number of top Democrats including Vice President Joe Biden, whose job description includes the title President of the Senate didn't attend.

READ: Netanyahu: Deal will pave way to Iranian nuclear bomb

Netanyahu used the Tuesday speech to frame Iran as a major terrorist threat to the U.S and Israel, framing it in the same vein as ISIS and North Korea. And he argued that the deal currently in the works to prevent the nation from gaining nuclear weapons would in fact "guarantee" that it secures them "lots of them."

The expected substance of the speech, coupled with the fact that the White House was not alerted to the invite ahead of time, had drawn sharp criticism from the administration, and Democrats crying foul. National Security Adviser Susan Rice last week said Netanyahu's decision to speak was "destructive to the fabric of the relationship" between Israel and the U.S.

Related: White House gets confrontational before Netanyahu visit

At least 50 Democratic House members and eight senators who caucus with the Democrats said in recent weeks they wouldn't attend the speech, many in protest to a move that they say is an affront to the president.

Rep. Charles Rangel (N.Y.) had originally said he would skip the meeting, but changed his mind on Tuesday.

A full list of the Democrats who confirmed they missed the speech follows:

SENATE - 8 members

Sen. Al Franken (Minn.)

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58 Democrats skipped Netanyahu's speech