It was a carefully staged Norman Rockwell scene. The street was lined with American flags; a high school band played "God Bless America." Then, under the watchful gaze of Wal-Mart's chief operating officer, Maryland's governor vetoed a bill that would have obliged large businesses to spend more on employee health care. The news here isn't that some politicians wrap their deference to corporate interests in the flag. The news, instead, is that Maryland's State Legislature passed a pro-worker bill in the first place. In fact, the bill passed by a veto-proof majority in the Maryland Senate, and fell just short...