It's apparently overlooked by the good partisans on this board that a memo (a summary) of the legal basis claimed for killing Americans without constitutional Due Process via drone targeting, which is a Dubya administration concept carried over by the Obama administration.
A few notable Dem talking heads have voiced criticism about this, but the Republicans? Nada. Getting their mitts back onto this level of power is Job One for the GOP, not a criticism of the policy. The unitary executive tenet is one they religiously believe in but only if the president is a Republican. If they attempt to insist that Obama be held accountable for it, they'll lose that power the next time around. It's the power that they're hungry for.