The Supreme Court heard oral arguments Tuesday in a lawsuit filed by Texas and Louisiana over Biden administration guidelines that severely restricted the Department of Homeland Security’s enforcement of federal immigration law against illegal aliens.

Twenty other states supported Texas and Louisiana with amicus briefs, ranging from Arizona to Florida and West Virginia to Wyoming. The Biden administration was appealing a federal district court judge’s ruling vacating its Sept. 30, 2021, guidelines nationwide after the judge concluded they violated U.S. law.