Minnesota Rep. Keith Ellison (D) equated the GOP's simultaneous push for low taxes and deficit reduction with trying to lose weight while gorging on "chocolate layer cake."

Ellison supported a House bill last week that would permanently extend the expiring Bush-era tax cuts for middle-class income earners, but not for those making more than $250,000 a year.

The Senate is currently wrangling over which of the current income tax rates to extend before they expire at the end of the year.

"Demanding $700B tax cut for Rich while demanding deficit reduction = eating chocolate layer cake everyday while losing 40 pounds. Dumb!," Ellison, the chairman of the Congressional Progressive Caucus, tweeted Sunday.

Senate Minority Whip Jon Kyl (R-Ariz.) indicated on Sunday Republicans could be open to a tax-cut compromise that includes extensions of unemployment benefits and the Bush-era tax rates for all income brackets.