Rep. Tony Gonzales announces he will not seek re-election amid House Ethics investigation into affair

Rep. Tony Gonzales, R-Texas, announced Thursday evening he will not seek re-election amid a House Ethics investigation into an affair he admitted to having with a former staffer.

Gonzales, a married father of 6, admitted to the affair for the first time on Wednesday – a day after advancing to the GOP primary runoff for his congressional district.

"At 18, I swore an oath to defend our nation against all enemies, foreign and domestic. During my 20 years in the military and three terms in Congress, I have fought for that cause with absolute dedication to the country that I love," Gonzales said in a statement.

"From overcoming the border crisis to taking a stand with my communities after the worst school shooting in Texas’ history, my philosophy has never changed: do as much as you can, and always fight for the greater good," he continued.

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"After deep reflection and with the support of my loving family, I have decided not to seek re-election while serving out the rest of this Congress with the same commitment I’ve always had to my district," he added. "Through the rest of my term, I will continue fighting for my constituents, for whom I am eternally grateful.

Gonzales confessed to the affair during an appearance on a conservative talk radio show one day after advancing to a runoff election in his congressional district's GOP primary.

The House Ethics Committee also launched an investigation into Gonzales on Wednesday to determine if he engaged in sexual misconduct with a female member of his staff and whether he doled out special favors or privileges as a result.