Pottymouth.

Someone in JoAnn Emerson's office (or someone who hacked into it) needs to wash their mouth out with soap:

Nobody expects to get a letter from a member of Congress that ends with an expletive.

But that's what happened when Rep. Jo Ann Emerson, R-Mo., recently corresponded with a resident of her southeast Missouri district. The letter ended with a profane, seven-letter insult beginning with the letter a - "i think you're an [asshole]."
...
[But at least she was polite about it.]

Connor said that 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."