“No matter what I say or do, I feel all I do is answer questions about Donald Trump rather than health insurance or tax policy,” Costello told CNN.

Costello announced in March that he would not run for reelection, blaming the partisan political environment, including the actions of Trump.

“I feel, increasingly, that if you’re a member of Congress, they assume that you’re not good,” Costello told CNN.

“They assume that you’re not telling the truth. No matter what you do, someone’s out there locked and loaded to say something disparaging, false, mean, in an attempt to have other people not like you,” he added.