The Trump administration filed a petition with the Supreme Court seeking review of a D.C. Circuit ruling that blocked a Day One executive order barring asylum claims by individuals who crossed the southern border outside ports of entry. The order revives elements of the prior Remain in Mexico policy and was submitted by Solicitor General John Sauer. Lower courts have halted the measure, prompting the administration to argue that the D.C. Circuit should not have the final word on this immigration enforcement tool.