June 16 (Bloomberg) -- Bloomberg View editor Paula Dwyer argues that Trump isn't a blank slate, exactly. He wants to ban Muslims from entering the U.S., deport 11 million undocumented immigrants and build a wall to keep Mexicans out. But where is it written that a presidential nominee has to have a passel of policy proposals to get elected? Nowhere, say several presidential historians. This commentary aired on Bloomberg Radio.\u0010\u0010(Paula Dwyer is a Bloomberg View editor. The opinions expressed are her own.)