Sixteen-year-old Mohammad Abu Khadra was on his way from Jordan to Houston to visit his older brother Saturday when he became unexpectedly detained by immigration authorities. Four days later, Mohammad is still in holding — now in a Chicago refugee resettlement center, away from his family in Texas and without access to his cellphone — and his family and lawyer want answers.

At first, Mohammad's brother Rami told NBC affiliate KPRC News that he thought the detainment had to do with Trump's travel ban against immigrants from seven predominately Muslim countries. (Although Jordan is not on that list.) It wasn't until Tuesday, three days after Mohammad was detained, that Rami was told that his brother actually might be in violation of his visa.

"I tried to get him some English [classes] so he could speak some English," Rami told KPRC. But since Mohammad was enrolled in those language classes at Katy High School, he might have needed to have a student rather than tourist visa.

But Mohammad's lawyer, Ali Zakaria, told Teen Vogue that he thinks his teenage client's treatment "has everything to do" with Trump's executive order.

"I volunteered at the airport on Sunday evening and Monday evening," Zakaria said. "I spoke to several travelers coming out of the airport and the impression I’ve gotten from them, and the impression I've gotten from lawyers across the country, is that whether you're from one of the seven countries or not, if you're Muslim you will be stopped at the airport."

Furthermore, Zakaria finds it "outrageous" not only that Mohammad was held in the airport without the ability to talk to an attorney for more than 48 hours, but that he was transferred to a shelter across the country as opposed to in Houston, where his brother could see him.

Rami has only been able to see his teenage brother once since his detainment on Sunday night at Bush International Airport. "He was very afraid," Rami told the Houston Chronicle. "Before I saw him, he was on a flight for 15 or 16 hours, then was at the airport for 72 hours. He was very tired and frustrated. When he took the flight to Chicago, he called me, but he doesn't know anything. He doesn't know what's going on."

Without access to his cellphone in Chicago, the Houston Chronicle reports Mohammad can have one phone call a week for 30 minutes. And according to Zakaria, who was connected to Mohammad's family through volunteering with the ACLU, it could take anywhere from two weeks to two months to resolve his client's case and get him home.

Lawyers have been flooding airports across the country to offer their aid to those who have been impacted by Trump's constitutionally questionable ban. And according to Zakaria, he was one of 25 to 30 lawyers volunteering at the Houston airport.

"When there have been national disasters, doctors and healthcare professionals have rushed to the scene. In this situation with Trump’s executive order, attorneys are the first responders," Zakaria said. "When you see other people in jeopardy, when you see other people suffering, you have to go out and do whatever you can. It’s the American way. "

Related: How Colleges and Universities Are Taking a Stand Against Trump’s Muslim Ban

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