The shady Iranian fundraiser who for years donated lucrative sums to top Democrats—including the president, vice president and secretary of state—has pleaded guilty to a major bank-fraud scheme that could land him in jail for nearly two decades.Disgraced Democratic money man Hassan Nemazee admitted this week that he defrauded three financial institutions out of nearly $300 million in loan proceeds by falsifying documents and signatures to show he had hundreds of millions of dollars worth of collateral. The Ivy League-educated crook then used the proceeds to donate big bucks to the campaigns of federal, state and local candidates. Among them...