ANALYSIS – The feds unexpectedly walked into a federal court Wednesday to file a lawsuit seeking to block AT&T from buying T-Mobile for $39 billion.

Though you’ll likely hear a lot of bitching and moaning about the move from politicians in the coming days, this is best thing to come out of Washington, D.C., since the Do-Not-Call list.

For those who haven’t been watching, AT&T is seeking to become the nation’s largest wireless carrier by outright buying T-Mobile, the nation’s fourth largest carrier. AT&T says the merger will help with its urban congestion problems, let it hire more pe...