Senator Lieberman’s support for McCain is beginning to irk the Democratic establishment. Lieberman won his seat in 2006 as an Independent and has caucused with Senate Democrats. Additionally, he held on to his chairmanship of the Homeland Security committee. Aside from open support of McCain, he is just as open with his criticism of Senator Obama.

The Capitol Hill newspaper Roll Call reports

“Obama loyalists were quick to express their frustration with Lieberman’s decision and warned that if he continues to take a lead role in attacking Obama it could complicate his professional relationship with the caucus.”

The big issue was Lieberman’s remarks regarding Obama’s speech to the American Israel Public Affairs Committee.

“I appreciate many of the very good intentions to Israel and Israeli security that Senator Obama express today,” Lieberman said. He added, “I thought in the speech there was a disconnect between things Senator Obama said today, particularly in regard to Iran, and things he has said or done earlier either in the campaign or the Senate.”

The paper goes on to report that there was a heated exchange between the two Senators.

“Obama dragged Lieberman by the hand to a far corner of the Senate chamber and engaged in what appeared to reporters in the gallery as an intense, three-minute conversation,” Roll Call reported.

“While it was unclear what the two were discussing, the body language suggested that Obama was trying to convince Lieberman of something and his stance appeared slightly intimidating.”