On the same day that jury selection began in the perjury case against former pitching star Roger Clemens, U.S. District Judge Reggie Walton issued a ruling restricting the ability of federal prosecutors to use certain witness statements at trial.

Walton interrupted opening statements on July 13 when a prosecutor, Steven Durham, ran afoul of that court order. The next day, Walton hastily declared a mistrial after prosecutors, for a second time, aired evidence the judge deemed inappropriate. A video contained information Walton said was not allowed.