The White House says U.S. President Barack Obama will nominate Chicago investment banker Bruce Heyman as U.S. ambassador to Canada. Known as a powerful fundraising force for the President, Heyman has been managing director of private wealth management at Goldman Sachs since 1999. Heyman apparently just graduated last month from “charm school,” the U.S. State Department’s diplomatic training course. Good news for us waiver hopefuls or more of the same? Time will tell...