The House Ethics Committee has launched a probe into the sexual misconduct charges swirling around Rep. Ruben Kihuen Ruben Jesus KihuenRep. Steven Horsford wins Democratic House primary in Nevada Members spar over sexual harassment training deadline Nevada Dem sanctioned for sexual misconduct announces city council bid MORE (D-Nev.), the panel announced Friday, marking the latest escalation in the wave of harassment charges that have engulfed Capitol Hill in recent weeks.

Kihuen, a 37-year-old freshman once seen as a rising star in the Democratic Party, has been under fire since BuzzFeed reported allegations that he’d made unwanted sexual advances toward a former campaign staffer.

More recently, a second accuser has emerged, contending Kihuen, as a Nevada state senator, repeatedly touched her inappropriately and sent her sexually charged text messages over a course of years, while she was lobbying on behalf of legislation before the body — allegations reported Wednesday by The Nevada Independent.

Kihuen has remained defiant, denying the initial charges from his former aide while suggesting the second accuser was a woman he’d dated — a contention the accuser rejected, according to the Independent.

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The allegations follow a string of similar cases to hit Congress in recent weeks, leading to the hasty resignation of Sen. Al Franken Alan (Al) Stuart FrankenGOP Senate candidate says Trump, Republicans will surprise in Minnesota Peterson faces fight of his career in deep-red Minnesota district Getting tight — the psychology of cancel culture MORE (D-Minn.) and Reps. John Conyers John James ConyersBiden's immigration plan has serious problems Tlaib wins Michigan Democratic primary Tlaib holds lead in early vote count against primary challenger MORE Jr. (D-Mich.) and Trent Franks Harold (Trent) Trent FranksArizona New Members 2019 Cook shifts 8 House races toward Dems Freedom Caucus members see openings in leadership MORE (R-Ariz.). Rep. Blake Farenthold Randolph (Blake) Blake FarentholdThe biggest political upsets of the decade Members spar over sexual harassment training deadline Female Dems see double standard in Klobuchar accusations MORE (R-Texas), who settled an $84,000 taxpayer-funded harassment case involving a former staffer in 2014, announced this week that he won’t seek reelection.

The response from Democratic leaders has been mixed, highlighting the lack of clear guidelines surrounding the reporting and settlement of sexual harassment cases on Capitol Hill.

House Minority Leader Nancy Pelosi Nancy PelosiHoyer: House should vote on COVID-19 aid — with or without a bipartisan deal Ruth Bader Ginsburg lies in repose at Supreme Court McCarthy threatens motion to oust Pelosi if she moves forward with impeachment MORE (D-Calif.), who was criticized for an initially soft response to the Conyers allegations, quickly called for Kihuen to resign — a position she reiterated Thursday.

“He wants to go through the ethics process? That's his right to do,” she said, adding that she had no plans to strip Kihuen of committee assignments in the meantime.

Yet other Democratic leaders haven’t gone as far, emphasizing Kihuen’s right to defend himself before the Ethics panel.

“I find the new allegation — as well as the one previously reported — very serious and credible,” Rep. Steny Hoyer Steny Hamilton HoyerOVERNIGHT ENERGY: California seeks to sell only electric cars by 2035 | EPA threatens to close New York City office after Trump threats to 'anarchist' cities | House energy package sparks criticism from left and right House energy package sparks criticism from left and right Hoyer: House should vote on COVID-19 aid — with or without a bipartisan deal MORE (Md.), the Democratic whip, said Thursday in response to the second set of allegations.

“As I’ve said before, if the allegations are true, he should resign. I believe the Ethics Committee ought to investigate these allegations immediately, but it is clear that we need a new process that can swiftly and transparently resolve issues like this and encourage victims to come forward and protect them while allowing the accused to make their case.”