\u201cIf it ain\u2019t broke, don\u2019t fix it,\u201d the adage goes. But for the sunset of Patriot Act authorities later this year\u2014including Section 215, a controversial provision that allows the National Security Agency to collect records, including those about Americans\u2019 phone calls\u2014the more applicable phrase may be \u201cIf it keeps breaking, throw it out.