Screw this guys rights. He's only been a legal citizen for only 7 months and pulls off an horrific event in a major city of Boston using bombs not far from New York City which suffered one of the worst tragedies in US history.
Our legal system is a joke after experiencing as a correctional officer for the last 7 years and not only did the city of Boston suffer from a horrific event but they'll be stuck paying for this pukes meals, cable and a roof over his head for decades.
No, he still has rights. Even a foreign national has rights under our system. If we disregard our system because we are mad, then they really have won. Our expectation of rights is the core of what makes the United States of America what it is. If we toss those rights out the window now, the slippery slope will really become a scary thing.
This was a criminal activity, not the actions of a foreign government, or organization. Read him his rights, let him have a lawyer, and make damn sure everything is done right. Cross the 'T's dot the 'i's and make damned sure this is an airtight case.