Rep. Justin Amash Justin AmashRon Paul hospitalized in Texas Internal Democratic poll shows tight race in contest to replace Amash Centrist Democrats 'strongly considering' discharge petition on GOP PPP bill MORE (I-Mich.) says that he's the "happiest" he's ever been while in Congress.

In a new Time magazine interview, Amash, the only non-Democratic member of Congress to support the impeachment inquiry against President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE, attributes his happiness to leaving the House Freedom Caucus and the Republican Party in July.

“It’s very freeing to not feel bound to a particular party," he says.

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The Michigan lawmaker, who has long been one of Trump's most vocal conservative critics, admits that partisanship would have sharpened his attacks in years past.

“I just think if President Obama were saying the kinds of things President Trump is saying, and this were several years ago, I would have been a lot harder on Obama,” the 39-year-old says.

“And I don’t think there’s anyone in either party for whom that’s not true.”

Amash says he grew tired of fellow conservatives falling in line with the president's rhetoric and policies instead of holding him and their own party accountable.

Former Rep. Mark Sanford Mark SanfordOn The Money: Business world braces for blue sweep | Federal Reserve chief to outline plans for inflation, economy | Meadows 'not optimistic' about stalemate on coronavirus deal Trump critic Sanford forms anti-debt advocacy group Republicans officially renominate Trump for president MORE (R-S.C.), who lost to a Trump-backed primary challenger last year and is now mounting a long-shot White House bid, told Time: “I think that [Amash] has represented something of the conscience of the conservative movement within the Republican Party.”

“He always stood for true north, whether that meant he was fighting alone or with a group of others. I think he’s ahead of his time.”