(Bloomberg) -- Donald Trump isn't just at the top of the polls in the Republican presidential primary, he's also at the center of its policy debates.Most Read from BloombergDimon Warns 7% Fed Rate Still Possible, Times of India SaysRepublican Moderates Turn to Rare Maneuver to Avoid Lengthy Government ShutdownIndians Have Five Days to Deposit $3 Billion in Soon-to-Be-Withdrawn BanknotesStocks Sink as Bears Take Charge, Dollar Rallies: Markets WrapTrump Found Liable for Fraud in New York Attorney