DES MOINES — U.S. Sen. Chuck Grassley says he’s recommending a U.S. magistrate and a state district court judge to fill two openings on the federal bench in Iowa. U.S. Magistrate Leonard Strand, of Sioux City, is being nominated to replace U.S. District Judge Mark Bennett for the Northern District of Iowa. State Judge Rebecca Ebinger, of Polk County, is being nominated to replace U.S. District Judge James Gritzner.