Staffers on Capitol Hill were calling it the Louisiana Purchase. On the eve of Saturday's showdown in the Senate over health-care reform, Democratic leaders still hadn't secured the support of Sen. Mary Landrieu (D-La.), one of the 60 votes needed to keep the legislation alive. The wavering lawmaker was offered a sweetener: at least $100 million in extra federal money for her home state. And so it came to pass that Landrieu walked onto the Senate floor midafternoon Saturday to announce her aye vote -- and to trumpet the financial "fix" she had arranged for Louisiana. "I am not going...