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(CNN) – An American teenager appeared before a federal judge in Chicago Thursday, charged with attempting to provide material support to a terrorist organization – ISIS.
The lawyer and family of Mohammed Hamzah Khan, 19, argues that the federal government is overreaching, all Khan had was inflammatory literature and a round trip ticket to Turkey.
"A lot of time the kid is doing this in secret, communicating online and not talking to his mom and dad because he knows what they will think," said former CIA counterterrorism official Phil Mudd, now with SouthernSun Asset Management.
"I don't debate what the family says. They have just lost their kid potentially. They don't know what he was doing, in my view," he says.
The American teenager faces up to 15 years in prison. Mudd said the government will likely investigate not only Khan, but also his facilitators, people that could have helped Khan travel to Turkey.
For more of our interview with former CIA counterterrorism official Phil Mudd, check out the video above.