Rep. Fred Upton, a Republican representing Michigan since 1986, announced his retirement on the House floor Tuesday morning.

Upton is among the 10 Republicans who voted to impeach former President Donald Trump in his second impeachment. He is now the 16th Republican to retire or seek another office ahead of the 2022 midterms, compared with 31 Democrats.

Michigan lost a congressional seat after the 2020 census, and under new redistricting maps, Upton would have faced Rep. Bill Huizenga in a member vs. member primary, had he run for re-election.