It doesn't have the cachet of Ronald Reagan's "It's Morning in America," and probably will never go down in the history books next to "A chicken in every pot" as one of the more memorable campaign slogans. But if Senate Minority Leader Harry Reid has anything to say about it, the phrase "America Can Do Better" will become a familiar part of the Democratic message in next year's elections. The Nevada Democrat has been routinely dropping the slogan into speeches and interviews, and his communications staff has used it liberally in press releases, even slapping it into the subject lines...