Lawyers for Louisiana and Texas are relying on President Donald Trump’s recent emoluments clause victory to press a federal appeals court to use a rare remedy to thwart a complaint that broadly challenges Louisiana’s abortion regulatory scheme.

A lawyer for Louisiana, which lost its motion to dismiss the suit, on Friday urged the U.S. Court of Appeals for the Fifth Circuit to issue a writ of mandamus, a move that could stop the case in its tracks before any finding on the merits.