In April 2020, the ACLU, ACLU of Southern California, and ACLU of District of Columbia filed a class action lawsuit on behalf of military service members challenging a 2017 Trump administration policy blocking their expedited path to citizenship. In August 2020, a federal district court certified the class and ruled that the policy’s requirement that non-citizens serve a minimum period of time before they can apply for citizenship is unlawful.

Whether the government may constitutionally make it more difficult for citizen fathers than citizen mothers to transmit citizenship to their out-of-wedlock children born outside the U.S.

The American Civil Liberties Union, ACLU of Texas, and National Immigration Law Center filed a petition for writ of mandamus before the Fifth Circuit Court of Appeals on behalf of four people impacted by a recent order issued by a federal district court in Brownsville, Texas, demanding the personal data of tens of thousands of Dreamers. A writ of mandamus, filed June 3, 2016, allows impacted individuals to initiate a new action in the court of appeals to seek redress from a lower court order.