Greg Sargent reports. Is this really such a hard case to make?

Experienced counterrorism agents from the FBI interrogated Abdulmutallab when he arrived in Detroit. According to the Justice Department, during this initial interrogation, the FBI “obtained intelligence that has already proved useful in the fight against Al Qaeda.” After the interrogation, Abdulmutallab refused to cooperate further with the FBI. Only then, after his refusal, did the FBI give him a Miranda warning.

What the FBI did in this case was nothing new. During the Bush administration, the FBI also gave Miranda warnings to terrorists detained in the United States.

Pretty straightforward.