The president commended one of the youngest women elected to Congress for delivering a major blow to House Democrats’ impeachment inquiry on Nov. 17.

Donald Trump has congratulated Rep. Elise Stefanik (R-N.Y.) on successfully debunking a key theory of the investigation while questioning former U.S. Ambassador to Ukraine Marie Yovanovitch at a public hearing.

“A new Republican star is born,” Trump said on Twitter. “Great going Elise Stefanik.”

Stefanik, who was first elected four years ago when she turned 30, made a shocking revelation—the Barack Obama administration had previously expressed concern about the son of U.S. presidential candidate Joe Biden (D), Hunter, and his role on the board of Ukraine energy company Burisma. Trump’s request to Ukrainian authorities to investigate the connection upset Democrats and ultimately led to the impeachment inquiry.

“So, for the millions of Americans watching, President Obama’s own State Department was so concerned about potential conflicts of interest from Hunter Biden’s role at Burisma that they raised it themselves while prepping this wonderful ambassador nominee before her confirmation,” the congresswoman said according to PBS “NewsHour.”

Stefanik also revisited a question Yovanovitch admitted to have prepared for a question and answer session with the then-Obama State Department.

“It wasn’t just generally about Burisma and corruption, it was specifically about Hunter Biden and Burisma and … the way the question was phrased in this model Q&A was ‘What can you tell us about Hunter Biden’s, you know, being named to the board of Burisma?’” Stefanik said. “Yet our Democratic colleagues and the chairman of this committee cry foul when we dare ask that same question that the Obama State Department was so concerned about but we will continue asking it.”

The finding shocked One America News Network “Tipping Point” host Liz Wheeler, who could not resist uploading a video of the questions with the caption “holy cow.”

“Rep. Elise Stefanik absolutely wrecks Adam Schiff and the Democrats’ entire impeachment premise,” Wheeler said on Twitter.

This development came after Stefanik previously tried to question Yovanovitch during an earlier portion of the hearing but committee Chairman Rep. Adam Schiff (D-Calif.) repeatedly interrupted her because her conduct allegedly breached a rule that the only person to whom he could yield time was counsel.

In her frustration, Stefanik called Schiff’s behavior “unacceptable” and an “abuse” of his chairmanship.

“Once again, Adam Schiff flat out refuses to let duly elected members of Congress ask questions to the witness, simply because we are Republicans,” Stefanik said on Twitter.