This week, Daniel Howes says President Donald Trump chose Michigan to counter the House impeachment vote because the state is shaping up to be a linchpin in his 2020 re-election effort. The signs are there: NBC News is tracking voter sentiment in and around Grand Rapids; the White House is tracking the votes of the state's Democratic members of Congress; Attorney General William Barr is touting a federal anti-violent crime partnership in Detroit; and Trump is taking his message to the heart of the industrial Midwest — often.