Justin Amash, the last honourable Republican, calls for Trump’s impeachment

WASHINGTON, DC - FEBRUARY 08: Sen. Rand Paul (C) (R-KY) takes a brief break from the floor of the U.S. Senate to pose for a photo with Rep. Justin Amash (L) (R-MI) and Rep. Thomas Massie (R) (R-KY) at the U.S. Capitol February 8, 2018 in Washington, DC. Paul is blocking the U.S. Senate from voting on a spending package reached yesterday to avoid a government shutdown. Paul is demanding that the U.S. Senate vote on an amendment that would cap spending. (Photo by Win McNamee/Getty Images)

Justin Amash, a 39-year-old Republican congressman from Michigan, is known as one of the most conservative members of the GOP. A former attorney, Amash is chair of the House Liberty Caucus, a group with a libertarian bent that is associated with the Tea Party movement.

But he is also gaining a reputation as a rare politician of conscience. During the testimony of Trump’s former attorney and fixer Michael Cohen in February, he was perhaps the only Republican on the committee to ask real, substantive questions rather than toe the party line of undermining the entire premise of the hearing.