Jason E. Chaffetz (; born March 26, 1967) is an American retired politician who served as the U.S. Representative for Utah's 3rd congressional district from 2009 until his retirement in 2017. He chaired the Committee on Oversight and Government Reform from 2015 until 2017.
During his tenure as a US Representative, his political positions included opposition to the Affordable Care Act, same-sex marriage, and scientific consensus on climate change. He expressed skepticism over mandatory vaccinations and pledged to hold hearings to determine their safety. He was a vocal critic of the Obama administration's conduct in the 2012 Benghazi attack. He also had been critical of Planned Parenthood. He opposes net neutrality and held hearings to investigate the FCC's decision to adopt net neutrality rules in 2015.
Chaffetz came to prominence in 2015 for his extensive investigations into Hillary Clinton. He rescinded his endorsement of Donald Trump in early October 2016 but expressed his intent to vote for him three weeks later. Having investigated Hillary Clinton and the Obama administration extensively, Chaffetz drew criticism after the 2016 election for declining to investigate certain potential conflicts of interest relating to President Donald J. Trump, and that of other individuals involved in his 2016 presidential campaign and subsequent presidential administration.
On April 19, 2017, Chaffetz announced he would not seek re-election in 2018, and on May 18, 2017, announced he would leave the House of Representatives on June 30, 2017. Chaffetz signed on as a contributor for Fox News and began with the network on July 1, 2017.