"A group of senators such as South Carolina’s Lindsey Graham and
Arizona’s John McCain applauded the decision not to read Tsarnaev his Miranda
rights — but they urged prosecutors to go a step further and use the
« enemy combatant » designation in handling the case, instead of relying
on the public safety exception."
http://www.npr.org/blogs/thetwo-way/2013/04/21/178254784/miranda-rights-and-tsarnaev-ashcroft-says-u-s-move-is-the-right-one