I think you're an asshole.
Emerson says she can't explain how the offensive language made it into the last line of the letter, which otherwise reads like a typical response to a citizen's question about last year's testimony of oil executives before the Senate Commerce Committee.
"There is no excuse for this inappropriate letter having been sent, and every apology has been made to the individual who received it," Emerson said in a written statement to The Associated Press.
"We cannot determine whether the addition to the letter was made by someone within the office or by someone with access to the office, but it is on my letterhead and the responsibility for it lies with me. A valuable lesson has been learned and new procedures will be adopted as a result."
Emerson personally signed the letter, dated Feb. 15. She also included a handwritten personal message at the bottom: "PS - please forgive the delay in responding."