U.S. Immigration and Customs Enforcement violated Jeanette Vizguerra’s First Amendment rights by detaining — and planning to deport — the Colorado immigration advocate, her attorneys argued in federal court in Denver on Friday.

ICE says Vizguerra entered the U.S. from Mexico illegally in 1997 and is being held pending deportation. In a statement shortly after her arrest, ICE said the mother of four has a final deportation order and “has received legal due process in U.S. immigration court.”

Community and family members of Jeanette Vizguerra, an undocumented Colorado immigration activist who was arrested by ICE on March 17, spoke Friday after a federal judge heard arguments that her First Amendment Rights were violated by ICE.