Rep. Justin Amash Justin AmashInternal Democratic poll shows tight race in contest to replace Amash Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill On The Trail: How Nancy Pelosi could improbably become president MORE (Mich.) officially filed as an Independent with the House clerk on Tuesday, one day after he submitted a letter formally resigning from the Republican conference and his position on the House Oversight and Reform Committee.

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His change in party affiliation is expected to be reflected for the first time during Tuesday evening’s vote series.

Amash — a staunch 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 — announced his exit from the GOP in a July 4 op-ed in The Washington Post.

Tensions between the Michigan lawmaker and the Republican Party began to escalate after he announced his support for initiating impeachment proceedings.