Attorney General Eric Holder wrote Sen. Rand Paul,R-Ky., to confirm that President Obama does not have the authority to kill an American on U.S. soil in a non-combat situation, Obama’s spokesman announced today.

White House Press Secretary Jay Carney quoted from the letter that Holder sent to Paul today. “Does the president have the authority to use a weaponized drone to kill an American not engaged in combat on an American soil?” Holder wrote, per Carney. “The answer is no.”

Paul said that was good enough for him. “I’m quite happy with the answer,” he said during a CNN interview. “I’m disappointed it took a month and a half and a root canal to get it, but we did get the answer.”

Carney added that, “if the United States were under attack, there were an imminent threat,” the president has the authority to protect the country from that assault.

Sen. Lindsey Graham, R-S.C., criticized Paul for posing the question. “I find the question offensive,” he said on the Senate floor this morning.