The Trump administration on Thursday urged the Supreme Court to block the new congressional map adopted by California voters in November. U.S. Solicitor General D. John Sauer told the justices that the map, which the state says was intended to create five new Democratic seats in the U.S. House of Representatives in response to the creation of five new Republican seats in Texas, “is tainted by an unconstitutional racial gerrymander.”

The filing came just under two months after the Trump administration submitted a brief supporting a request by Texas to be able to implement its new map, after a lower court had ruled that the map unconstitutionally sorted voters based on race. In December, the justices granted Texas’ request, over a dissent by the court’s three Democratic appointees.

A group of Republicans from California came to the Supreme Court earlier this week. They asked the justices to bar the state from using the new map, known as Proposition 50, in this year’s elections. A three-judge district court, which hears challenges to the constitutionality of congressional redistricting, had rejected their contention that the new map relied on race as the primary factor in drawing 16 congressional districts. Instead, a majority of that court emphasized, when voters went to the polls in November to approve the map in a special election, “the pros and cons” of the map “were outlined in purely political, partisan terms.”