Greg Abbott on Tuesday asked the Texas Supreme Court to remove Houston Rep. Gene Wu, chair of the House Democratic Caucus, from office, an unprecedented escalation in Republicans’ efforts to resume business in the Legislature and advance new congressional maps.

The lawsuit filed with the state Supreme Court argues that Rep. Gene Wu violated Texas' Constitution and that his absence amounted to an abandonment of office.

Texas Gov. Greg Abbott filed a lawsuit on Tuesday to remove one of the state's House Democratic leaders, Rep. Gene Wu, calling him "the ringleader" of the dozens of Democratic lawmakers who left the state in an effort to block a redistricting vote.