5th Amendment anyone? Bueller? Bueller?

OK, so Eric Holder says it is OK for the president to order a drone strike against a US citizen inside the United States if the president thinks it is necessary. According to The Telegraph, Attorney General Holder thinks that due process doesn't protect US citizens inside the United States.

"The president could conceivably have no choice but to authorise the military to use such force if necessary to protect the homeland," Mr Holder said.

Seems to me there's an amendment that has something to do with life, liberty, due process, that kind of shit, that protects us from the government just deciding to kill us without determining whether we did anything, legally speaking, to deserve it. I guess not.