Arkansas Republican Sen. Tom Cotton’s office is under the First Amendment microscope again for its practice of sending cease-and-desist letters to constituents who call in and use coarse language.

Arkansan Don Ernst said he was threatened with a cease-and-desist letter after he called Cotton’s office 17 times last year from January to June asking about the senator’s response to the Individuals With Disabilities Education Act, or IDEA, and how Cotton would deal with the opioid crisis if the 2010 health care law was repealed, Ernst revealed on a The Sexy Pundits podcast Sunday.

Ernst’s son is an opioid addict.

He waited two weeks for a response that never came after his initial call in January before dialing the office again, he said.

“On the eighteenth time — and I have regrets about this to some degree — I said, ‘You know it’s bulls–t that I can’t get a response to these, I think, quite clear questions,’” Ernst said.