Democrats wary of accepting any entitlement benefits cuts are asking Republicans to show them their plans if they want to make Medicare means-testing a part of a lame-duck fiscal package.

GOP leaders have floated the idea of hiking Medicare costs for wealthier beneficiaries – a proposal President Obama has repeatedly backed – as a condition of any deal to prevent a slew of tax hikes and spending cuts from taking hold Jan. 1.

But Speaker John Boehner (R-Ohio), the GOP’s point man in the negotiations, has declined to specify the Republicans’ wish-list for entitlement reform – at least publicly. And it’s unclear whether means-testing would be enough to win GOP support for a deal that would also hike tax rates on households with annual family income above $250,000.