Rep. Jason Chaffetz (R-Utah) plans to vacate his congressional seat on June 30 after a almost eight-year tenure.
His letter announcing his resignation did not mention the investigation, focusing exclusively about his decision about wanting to spend more time with family.
U.S. Rep. Jason Chaffetz speaks with reporters at his home Thursday, May 18, 2017, in Alpine, Utah.
The 50-year-old lawmaker officially announced his resignation on Thursday, but he said last month he would not seek re-election in 2018. FILE - In this December 17, 2015 file photo, House Oversight and Government Reform Committee Chairman Rep. Jason Chaffetz, R-Utah speaks Capitol Hill in Washington.More news: In Saudi Arabia, Trump seeks to move past domestic troubles
He is on his fourth term in the House of Representatives and he also serves on the House Judiciary Committee.
Chaffetz made the announcement a day after tweeting that he had invited ex-FBI Director James Comey to testify next week at a hearing of the oversight committee he chairs.
Trump has long complicated Chaffetz's life.
"I loved being in the driver's seat, but. there are lots of good people who care about these issues and are well-suited to carry out these investigations", he said.More news: Last batch of rebels leaving central Homs in Syria
Democratic Rep. Elijah Cummings of Maryland, the ranking member on the House Oversight Committee, said on the same segment of This Week that he hopes Chaffetz will use his subpoena power to get the meeting transcripts. The five-term congressman rescinded his endorsement of Trump a year ago after recordings surfaced of the reality show star bragging about groping women, only to hastily re-endorse Trump shortly before the FBI announced it was reviving its investigation into Clinton's emails.
Chaffetz said his last day will be June 30. But they'll face an uphill battle in Chaffetz's heavily Republican district, which stretches from Salt Lake City's southeastern suburbs to desert towns in southeastern Utah and includes heavily conservative Mormon areas.
Asked on ABC's "This Week" to respond to a report that Trump told Russian officials Comey was a "nut job", Chaffetz said, "Well, I hope that's not true".
Chaffetz became a campaign manager and chief of staff to former Utah Gov. Jon Huntsman, Jr. but they had a falling out in 2012 when Chaffetz endorsed Mitt Romney for president over Huntsman.More news: German woman killed, Finnish woman kidnapped in Kabul
- Weiner pleads guilty in sexting case, could go to prison
- 200 prisoners in Israeli jails join hunger strike
- Roger Ailes, Former Fox News CEO, Dies At 77
- Roger Stone: Trump's Saudi award 'makes me want to puke'
- South Korea wants to reopen communication with North Korea
- Closer medical watch of tens of hunger-striking Palestinians
- Wenger looks for salvation as top four race reaches climax
- Antonio Conte won't stay at Chelsea without family in London
- Swedish Prosecutor Office Drops Rape Charges Against Julian Assange
- Trump to stay in 'armored suite' in Israel