Des Moines Register: Prosecutors used disturbing tactics that secured a 27-year prison sentence for Iowa kosher slaughterhouse executive Sholom Rubashkin, according to a letter signed by more than 100 former U.S. attorneys general, judges and others. The April 19 letter urges Kevin Techau, the U.S. attorney for the Northern District of Iowa, to “rectify the injustice” done to Rubashkin, who was convicted in 2009 of bank fraud and money laundering charges in the wake of a historic raid by immigration agents at his family’s Postville meatpacking plant, Agriprocessors. The letter comes as defense attorneys detailed new evidence in a March filing suggesting that prosecutors knowingly allowed “false and misleading” testimony at a sentencing hearing that U.S. District Judge Linda Reade relied on in handing down the lengthy sentence.