Apparently those texts depict him calling for or approving of jihad violence against non-Muslims. This is also the same jihadi clown who threatened to murder his own attorneys.

“Accused Islamic State soldier from Dearborn loses evidence fight against feds,” by Robert Snell, Detroit News, December 13, 2021 (thanks to Henry):

A federal judge Monday refused to suppress texts and statements made to federal agents by an accused Islamic State fighter from Dearborn captured on a Syrian battlefield three years ago, dealing a setback to the defense of a rare foreign fighter brought back to America to face charges.

Texts Ibraheem Musaibli, 31, exchanged with an FBI Joint Terrorism Task Force officer and comments the Dearborn man said while being flown back to the United States aboard a customized C-17 military cargo plane were made voluntarily, U.S. District Judge David Lawson wrote in a federal court filing. Musaibli talked to the officer after being advised of his rights, the judge added.

“There is no valid reason to suppress the statements or the text messages,” Lawson wrote….

Musaibli drew international attention three years ago when he was captured in Syria. The case has shed light on Musaibli’s journey from his parents’ perfume shop in Detroit to a Middle East war zone and presented the U.S. court system with a unique chance to prosecute an American accused of leaving the U.S. and fighting for the Islamic State group.

Defense lawyers tried to suppress the messages, arguing the FBI task force officer used a code name and coercion while offering to rescue Musaibli, but only if he admitted being an Islamic State soldier.