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.

Vizguerra's attorneys said immigration agents detained her in violation of her First Amendment right to free speech.

An undocumented mother and high-profile activist was detained by ICE while she was on a work break from her job at Target, her attorney and a family friend say.