Like most people, I enjoy a good joke. But Donald Trump for president? With apologies to Karl Rove, it's not really that funny. The Trump candidacy is not a joke; it's a scam. But its success with millions of voters shows us we are a nation very susceptible to scams if they are done on a grand enough scale...... In Donald Trump we have a liberal billionaire with a long record of supporting Democratic candidates who is willing to spend unlimited amounts of money to reinvent himself as a populist conservative. Ordinarily, that would be an impossible, even laughable undertaking....