The Obama administration believes it could technically use military force to kill an American on U.S. soil in an "extraordinary circumstance" but has "no intention of doing so," U.S. Attorney General Eric Holder said in a letter disclosed Tuesday.

Holder's March 4 letter was disclosed by Sen. Rand Paul (R-Ky.), who had asked whether the Justice Department believed President Barack Obama had the legal authority to order a targeted strike against an American citizen located within the United States.

The Obama administration, Holder said, rejected the use of military force where "well-established law enforcement authorities in this country provide the best means for incapacitating a terrorist threat." But in theory, it'd be legal for the president to order such an attack under certain circumstances, Holder said.