The latest Republican proposal to remove three judges from the U.S. Court of Appeals for the D.C. Circuit — as unlikely as it seems to happen at this point — isn’t unprecedented. But this time it brings with it an ideological battle about the political makeup of the nation’s second highest court.

U.S. Senator Charles Grassley (R-Iowa) pitched the Court Efficiency Act on Wednesday, after years of Republican argument that the D.C. Circuit has more judges than it needs. Grassley made a similar move during the George W. Bush administration, playing a role in removing one judge from the prominent Washington appeals court.