Sixteen asylum seekers who alleged the federal government treated them inhumanely in Texas immigration detention centers are preparing to go before a federal judge Thursday and Friday to argue for a preliminary injunction.

If the migrant men win a preliminary injunction, it would mean that in four South Texas counties, U.S. Customs and Border Patrol would have to give detainees access to lawyers and either drastically improve conditions in short-term immigration detention facilities known as “hieleras” or iceboxes, or stop keeping people there longer than 72 hours.