Former Arizona Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeHow fast population growth made Arizona a swing state Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden MORE (R) will join Harvard's Institute of Politics this fall as a resident fellow, the university announced Thursday.

Other fellows include Black Voters Matter Fund co-founder LaTosha Brown, The Atlantic President Bob Cohn and former Panamanian Vice President and Foreign Minister Isabel de Saint Malo de Alvarado.

Flake retired from Congress at the beginning of this year.

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While in the Senate, he was a vocal critic of President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, although he often ended up voting with him regardless.

After some rumors, Flake announced in January that he would not seek the GOP nomination for president in 2020 and signed on with CBS News as a political contributor.