Rep. Gregg Harper Gregory (Gregg) Livingston HarperCongress sends bill overhauling sexual harassment policy to Trump's desk Dems cry foul in undecided N.C. race Mississippi New Members 2019 MORE (R-Miss.), the chairman of the House Administration Committee, said Thursday that he will retire at the end of this year, joining a growing list of Republicans opting not to seek reelection.

Harper is now the seventh House GOP panel chairman to decide to leave Congress since the start of last year.

He said in a statement that he and his family decided over the holidays that this year would be his last in Congress, where he has served since 2009.

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"The opportunity to serve the people of the 3rd District, our state, and our country is something that my wife, Sidney, and I will never forget. We have been contemplating for almost two years when it would be our time not to run again, and after spending time over Christmas and New Year’s with my family, we made the very difficult decision to say that 10 years will be long enough. I never intended for this to be a career, and it will soon be time for another conservative citizen legislator to represent us," Harper said.

Aides to Harper did not offer official comment early Thursday afternoon.

Harper began serving as House Administration Committee chairman a year ago, and therefore was not bound by term-limit rules, like most of the other chairmen who also decided to retire.

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Harper has been a key part of recent legislative efforts to overhaul Capitol Hill's sexual harassment prevention policies.

His committee has held multiple hearings about the system available for staffers to report harassment, which lawmakers of both parties say is overdue for reform.

Harper and a group of bipartisan lawmakers said in late December that they expect the House Administration Committee to advance legislation this month that reforms Capitol Hill's sexual harassment policies.

The lawmakers said they expect the legislation will include ensuring more transparency for settlement payments and requiring members accused of sexual harassment to be personally responsible for settlements.

At the request of the House Administration Committee under Harper, the Office of Compliance, which handles the harassment reporting process, revealed that six-figure sums of taxpayer dollars have been paid out for settlements related to sexual harassment in recent years.

A special fund operated by the Treasury paid out $84,000 to a former staffer who accused 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) of sexual harassment in 2015. The Office of Compliance also disclosed that $115,000 in settlements were paid in three sexual harassment cases between 2008 and 2012.

Harper's Mississippi district is expected to remain under GOP control after this year's midterm elections. But his retirement creates yet another open seat currently held by a Republican in an election cycle expected to be challenging for the party due to historical midterm trends.

Republicans stand to grapple with at least 29 open seats this year, due to 16 retirements, 10 lawmakers running for other office and two resignations. Rep. Pat Tiberi Patrick (Pat) Joseph TiberiOhio New Members 2019 Many authors of GOP tax law will not be returning to Congress GOP Rep. Balderson holds onto seat in Ohio MORE (R-Ohio) is also expected to step down by the end of this month to take a position at the Ohio Business Roundtable, likely prompting another special election.

By comparison, House Democrats so far are only facing 15 open seats in 2018. Only plan to retire, while the other open seats will be due to eight lawmakers running for other office and the resignation of former Rep. 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.).