text:  A potentially big win at the Supreme Court today for some of the January 6th defendants. ABC's Terry Moran. The case was brought by former Pennsylvania police officer Joseph Fisher, who stormed the Capitol on January 6th and was charged in part with obstruction. The specific law used by the Justice Department makes it a crime to alter or destroy documents and records to be used in official proceedings or otherwise obstruct any official proceeding. That law was originally written to prosecute business and financial crimes.