One of the most outspoken House Democrats on Thursday compared the Senate to the Politburo of the Soviet Union.
Rep. Anthony Weiner (N.Y.) made the comparison while discussing what the upper chamber can accomplish during the rest of the lame-duck session.
Animosity between House Democrats and the Senate has spiked ever since President Obama brokered a tax-cut compromise with Senate Republicans.
The Senate passed that legislation by an overwhelming 81-19 vote, but it is unpopular with many House Democrats since it extends all the Bush tax cuts for two years.
Other items have been delayed in the Senate, such as the $1.1 trillion omnibus spending bill and a House-passed repeal of the military's ban on openly gay service members.
Tensions also ran high between the two chambers during the contentious healthcare debate earlier this year.
At the time, House Majority Whip James Clyburn (D-S.C.) compared the Senate to the British House of Lords.
"[Senators] tend to see themselves as a House of Lords and they don't seem to understand that those of us that go out there every two years stay in touch with the American people," he said in a January interview with Fox News Radio. "We tend to respond to them a little better."