Rep. Ryan Costello Ryan Anthony CostellloTrump struggles to stay on script, frustrating GOP again Bottom line Former GOP Rep. Costello launches lobbying shop MORE (R-Pa.) condemned President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE on Tuesday after he attacked the appearance of adult-film actress Stormy Daniels, calling her "Horseface" in a tweet celebrating his victory against her in her defamation lawsuit.

“To say this is unbecoming of any man, let alone the POTUS, is a vast understatement,” Costello, who is not seeking reelection, tweeted late Tuesday morning.

“And to say this enables teenage boys to feel they have a license to refer to girls [with] such names is obvious,” he continued. “It’s all very embarrassing.”

To say this is unbecoming of any man, let alone the POTUS, is a vast understatement. And to say this enables teenage boys to feel they have a license to refer to girls w such names is obvious. It’s all very embarrassing. https://t.co/dC5xxmFoGo — Ryan Costello (@RyanCostello) October 16, 2018

The Republican lawmaker's remarks came shortly after Trump attacked Daniels on Twitter, calling her a “total con.”

“Federal Judge throws out Stormy Danials [sic] lawsuit versus Trump. Trump is entitled to full legal fees.' @FoxNews Great, now I can go after Horseface and her 3rd rate lawyer in the Great State of Texas. She will confirm the letter she signed! She knows nothing about me, a total con!'” Trump tweeted.

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Trump’s tweet came one day after a federal judge threw out Daniels's defamation lawsuit against the president and ordered the adult-film actress to repay his legal fees.

The ruling does not affect a separate lawsuit Daniels is bringing against the president regarding a 2016 nondisclosure agreement.

Costello, who has openly criticized the president before, announced in March that he would not seek reelection, citing the partisan political environment.

In June, he slammed Trump on Twitter following an announcement that the Super Bowl champion Philadelphia Eagles would not visit the White House.

Costello, a self-declared “Philly sports fan,” said the president handled the meeting with the team poorly and added that he was “disappointed” in Trump’s decision.