Was it a serious breach of security? Yes. Is it the biggest story facing Americans? Not by a long shot.
How about the economy? Or Afghanistan and Iraq? I'm guessing that the passing freak show of the Republican primary, blown up like a Macy's Day Parade figure on network TV for the past six months, left a big gap and TV executives needed something purient and light to fit its absence.
How about issues of federalism and state authority? How about the fact that restoring the Everglades is a $20 billion project, involving a couple of million acres of land, and that the state of Florida only has five people working part-time to do monitoring of the Big Sugar polluters?
To me, there are many stories bigger than the U.S. Secret Service. But if you are going to investigate the U.S. Secret Service ad infinitum, how about the story of shifting morals over the decades and during times of severe economic crisis, suddenly human sexuality becomes an issue for dissection by the press.