If you want just one taste of the essential stupidity of the politicization of the Abdulmutallab investigation, you need only look at today's Washington Post, in an article titled "Criticism of Obama on national security likely to remain big issue."
Therein, we get the following quote from Angry Leprechaun Senator Jeff Sessions (R-Ala.):
"Instead of trying to excuse the inexcusable, the administration should take responsibility for the dire consequences of its decision to swiftly grant civilian rights to this foreign terrorist."
But as Spencer Ackerman points out, it's hard to see what the "dire consequences" are. If we're strictly being factual, we can say this: As a consequence of swiftly granting civilian rights to this foreign terrorist, the FBI is obtaining a significant amount of intel on al Qaeda that they didn't already have. That would suggest to me that the "dire consequences" of following the rule of law have fallen most heavily on foreign terrorists.
That said, I can nevertheless discern some potential dire consequences. A dire consequence of the right's insistence on politicizing the Christmas Crotchfire attack is that they've transformed an al Qaeda failure into an al Qaeda victory. A dire consequence of insisting that Abdulmutallab isn't entitled to Constitutional rights is that more people might start believing that this is true, when it isn't. And finally, a dire consequence of treating Jeff Sessions opinions on the matter as credible is that there may be yet more newspaper articles titled "Criticism of Obama on national security likely to remain big issue," when the facts in evidence very clearly state that it should not be an issue at all.
The GOP, National Security and Facts Not in Evidence [Washington Independent]