AMA's Endorsement of House Health Care Bill Sparks Internal Uprising

The American Medical Association's much-touted endorsement of the House health care reform bill has triggered a revolt among some members who want the endorsement withdrawn.

Some members are outraged that the group's trustees made the endorsement without the formal approval of the organization's House of Delegates.

On Monday, delegates will vote on a resolution offered by some members that, if approved, will withdraw the AMA’s endorsement of the bill.

President Obama cited the endorsement of the influential AMA, along with AARP's, in a surprise appearance Thursday in the White House briefing room as he attempted to beat back criticism that the bill would gut Medicare.

"They're endorsing this bill because they know it will strengthen Medicare, not jeopardize it," he told reporters. "They know it will protect the benefits our seniors receive, not cut them."

"So I want everyone to remember that the next time you hear the same tired arguments to the contrary from insurance companies and their lobbyists and remember this endorsement the next time you see a bunch of misleading ads on television," he added.

Fox News' Trish Turner contributed to this report.