Washington (CNN) A Democratic source familiar with the talks tells CNN they have hit a major setback because Republicans are now insisting that any fiscal cliff deal include chained CPI, which Democrats consider a poison pill.
The Democratic source says they understand the president offered this in talks with House Speaker John Boehner, but Democrats say that was in the context of a larger deal in exchange for changes to the way the debt ceiling is approached which is not in the plan anymore.
Chained CPI effectively means that Social Security recipients would have smaller checks each month. Most Democrats oppose this, but many were willing to go along with it as part of a larger deal.
This Democratic source did not want to be identified because of the closed nature of the talks, but was clearly giving the information to CNN to make public the Democrats point of view and push the Republicans to give in on this high stakes issue.
The source also told CNN that Democrats are currently going outside their comfort zone in these talks with regard to tax rates keeping tax rates in place for higher income households than the president wants. The source also said Democrats are negotiating with Republicans on extending the current lower estate tax rate, a big issue for many Republicans as well as moderate Democrats.
A Senate Republican leadership source responded by pointing to the presidents comments in an interview that aired Sunday suggesting he is willing to look at chained CPI in pursuit of strengthening Social Security for the long term.
Democrats, however, do not see the mini-deal theyre talking about now as a long term prospect with regard to entitlements.
CNN is also told that if things dont change by the time senators meet at 3 p.m. ET, Democratic leaders will have to tell their rank and file that things are not there yet.
This source further said that they will decide by early this evening whether to pull the plug and put the fallback bill on the floor, a bill that keeps tax rates in place for those making less than $250,000, fixing the Alternative Minimum Tax, the so-called doc fix, and extending unemployment benefits.