What’s the prescription for a famously brilliant venture capitalist who has trouble connecting with blue-collar voters in his native state? How about bringing in a far more controversial venture capitalist who’s claim to recent fame is in firing people on national television? What could go wrong?With just over a week to go before Michigan voters head to the polls, Mitt Romney is enlisting the help of one of his highest-wattage surrogates: Donald Trump. The real estate mogul is preparing to spread his pro-Romney, anti-Rick Santorum message in a series of radio interviews this week on local stations from Traverse City...