GRAND RAPIDS, Mich. (AP) — Rep. Justin Amash of Michigan says he is leaving the Republican Party because he has become disenchanted with partisan politics. Amash, the lone Republican member of Congress to support the impeachment of President Donald Trump, says he has become discouraged by party politics and “frightened by what I see from it.” Writing in the Washington Post on July 4, Amash says: “I am declaring my independence and leaving the Republican Party.”