The U.S. Supreme Court on Tuesday let a Republican-backed Texas law take effect allowing state law enforcement authorities to arrest people suspected of crossing the U.S.-Mexico border illegally, rejecting a request by President Joe Biden’s administration.

The court has a 6-3 conservative majority, and its three liberal justices dissented on Tuesday. The administration had asked the justices to freeze a judicial order allowing the Texas law to take effect while its challenge to the statute proceeds in the lower courts.

The law violates the U.S. Constitution and federal law by interfering with the U.S. government’s power to regulate immigration, the administration has argued.