Talk about déjà vu. Pressed by questions about a scandal-tarred fundraiser, a candidate named Clinton decides to return hundreds of thousands of dollars. The politician's operation promises to conduct criminal background checks on big fundraisers in the future. And it leaks its decisions at night after a busy day in hopes of burying the news and minimizing the damage. In 1997, the pol, of course, was Bill Clinton and the tainted money came from folks such as John Huang, Charlie Trie, Johnny Chung and Pauline Kanchanalak. A decade later, it's Hillary Rodham Clinton's turn to write refund checks to deflect...