On a recent afternoon, Mahmoud Khalil sat in his Manhattan apartment, cradling his 10-week-old son as he thought back to the pre-dawn hours spent pacing a frigid immigration jail in Louisiana, awaiting news of the child’s birth in New York.

For a moment, the outspoken Palestinian activist found himself uncharacteristically speechless.

“I cannot describe the pain of that night,” Khalil said finally, gazing down as the baby, Deen, cooed in his arms. “This is something I will never forgive.”

Now, weeks after regaining his freedom, Khalil is seeking restitution. On Thursday, his lawyers filed a claim for $20 million in damages against the Trump administration, alleging Khalil was falsely imprisoned, maliciously prosecuted and smeared as an antisemite as the government sought to deport him over his prominent role in campus protests.

The filing — a precursor to a lawsuit under the Federal Tort Claims Act — names the Department of Homeland Security, U.S. Immigration and Customs Enforcement and the State Department.