President Donald Trump's use of troops to help carry out intensified immigration raids faces its biggest challenge yet on Thursday, when a federal judge is set to weigh a request from California Gov.

Cary López Alvarado, a U.S. citizen who is nine months pregnant, was detained after blocking immigration agents from entering what she believed to be private property.

President Donald Trump had declared “changes are coming” to his administration’s immigration policy after apparently hearing negative feedback from the owners of agricultural businesses, hotels and restaurants — many of which rely on immigrant workers to operate.