The House Oversight and Government Reform Committee is investigating the White House’s employment of staff secretary Rob Porter in the wake of allegations that he abused his two ex-wives, committee chairman Rep. Trey Gowdy, R-South Carolina, said Wednesday.

>> Read more trending news

Porter submitted his resignation Feb. 2.

Gowdy told CNN that the committee launched a probe Tuesday night into Porter's employment and when White House officials knew about the domestic violence allegations levied against him.

Porter has denied any wrongdoing.

"We are directing inquiries to people that we think have access to information we don't have. You can call it official. You can call it unofficial," Gowdy told CNN. "I'm going to direct questions to the FBI that I expect them to answer."

Porter resigned Feb. 2 after his ex-wives went public with allegations of domestic abuse and said they spoke with federal authorities about the claims, prompting critics to question why he had remained employed in the Trump administration. The allegations held up a background check needed to grant Porter a security clearance for work in the White House. Officials said he was working on an interim security clearance.

The process to get Porter his clearance was ongoing at the time of his resignation.

"How do you have any job if you have credible allegations of domestic abuse?" Gowdy asked on CNN. "I am biased toward the victim."

Porter's first wife, Colbie Holderness, and his second, Jennifer Willoughby, told the FBI about the alleged domestic violence in January 2017, after they were contacted while Porter was applying for his security clearance, according to The Washington Post.

White House officials defended Porter in the immediate aftermath of the allegations, and President Donald Trump has faced criticism for what critics called his lack of care for the victims and his focus on the fact that Porter has denied the claims.

“I was surprised by (the allegations), but we certainly wish him well, and it’s a tough time for him,” Trump told reporters in Washington on Friday. “He did a very good job when he was in the White House, and we hope he has a wonderful career. … It was very said when we heard about it, and certainly he’s also very sad now. He also, as you probably know, says he’s innocent, and I think you have to remember that.”

U.S. President Donald Trump speaks with White House Secretary Rob Porter (C) and Sen. Mike Lee (R-UT) (R) as they return to the White House December 4, 2017 in Washington, DC. (Photo by Chris Kleponis-Pool/Getty Images)

Credit: Pool

icon to expand image

Credit: Pool

Holderness told The Daily Mail that Porter was verbally abusive throughout their relationship, which started in 2000, but that things escalated after they were wed in June 2003. She said Porter kicked her during their honeymoon and during a 2005 vacation in Italy, punched her in the face.

Willoughby, who married Porter in November 2009 and separated from him in early 2010, told The Daily Mail that Porter was verbally abusive.

Willoughby obtained a protective order against Porter in June 2010 after she said he violated their separation agreement and refused to leave her apartment, according to court records obtained by The Daily Mail. In the complaint, Willoughby said Porter punched in a glass door while she was locked inside the apartment, but left after he heard she was on the phone with police.

She told the Mail that in December 2010, he dragged her out of a shower while she was naked in order to yell at her.

The couple was divorced in 2013.