With Congress continuing to work on deficit reduction proposals ahead of a vote on the debt ceiling, Missouri Senator Claire McCaskill’s sent a letter to Vice President Biden, who’s leading the discussions, asking that the administration continue to oppose any GOP efforts to insert their plan to dismantle Medicare into a deficit reduction package. The letter was also signed by Democratic Senators Bill Nelson (D-FL), Ben Cardin (D-MD), Sherrod Brown (D-OH) and Jon Tester (D-MT). “As the working group moves beyond areas of consensus and into parts of the budget that will require the toughest choices, we wish to identify in advance one proposal that we cannot support in any form—the House-passed plan to dismantle Medicare,” the senators wrote. “For the good of the nation’s seniors, it must remain off the table.”