Congressional leaders and President Barack Obama called Friday for a return to negotiations to avert the so-called fiscal cliff, a day after talks cratered in a very public fashion when Republicans abandoned House Speaker John Boehner's backup plan. In truth, talks to secure a big deficit-reduction deal had already broken down Monday afternoon in the office of Mr. Boehner (R., Ohio)......[snip]A review of the negotiations, based on interviews with a dozen aides and lawmakers, suggests the problems lay in Mr. Boehner's inability to coax his rank-and-file to support a deal that raises taxes on higher-income Americans. Another factor was what...