Republican legislators in California announced Wednesday that they are sending a letter to the U.S. Department of Justice and to the U.S. Attorneys representing California, calling for a potential federal investigation into who is behind the proposed new congressional maps in California and how they were constructed.

The California State Supreme Court prevented a Republican lawsuit challenging Gov. Gavin Newsom's redistricting push.

The California Supreme Court on Wednesday rejected an attempt by Republican legislators to delay Democrats from gerrymandering the state’s congressional districts. The justices said the emergency petition, filed earlier this week, “failed to meet their burden of establishing a basis for relief at this time under” the California Constitution.

California Gov. Gavin Newsom on Thursday signed a series of bills calling for new congressional maps that could add up to five Democratic seats in Congress, a response to an ongoing, Trump-led effort in Texas to use redistricting there to carve out five additional GOP seats.

The national tit-for-tat redistricting battle entered its next phase Thursday as California Democrats launched their final legislative push to redraw their congressional map to add up to five winnable seats for their party,

California voters will decide in a November special election whether to approve a redrawn congressional map designed to help Democrats win five more U.S. House seats next year.

According to the Campaign Legal Center, Johnson’s campaign committee began paying $2,500 a month to Issa this past March for a Washington, D.C., property he uses as a residence.

Texas Republicans now face a clear path to redraw the state’s congressional maps after state House Democrats ended their 15-day walkout and returned to the Capitol on Monday.