Ninety-five years ago Truman Newberry, a modest, well-mannered scion of an old-money Detroit family, suddenly found himself under federal indictment and his very name synonymous with political corruption. Newberry’s “crime”? He had run for the United States Senate as a long-shot underdog against the President’s handpicked candidate and nation’s most famous man, Henry Ford. And thanks to a skillful ad campaign financed by nearly $200,000 contributed by Newberry’s family members and friends (the equivalent of about $3 million in 2013), he had won. Before Super PACs, McCain-Feingold, “soft money,” and the Keating 5; before Watergate, and even before Teapot Dome, there…