SIOUX CITY, Iowa (AP) – A 56-year-old northwest Iowa man with a record of drug convictions has been given 20 years in federal prison for selling methamphetamine. Federal prosecutors say Ronald Walstrom, of Palmer, had pleaded guilty to conspiracy to sell meth and to possession of meth for sale. He admitted selling meth from January 2007 through April 2011. 
Walstrom was sentenced on Monday in federal court in Sioux City. He must serve eight years of supervised release after he leaves prison. Walstrom has two other felony drug convictions on his record. One came in October 1996 in Phelps County, Neb. The other came in May 1997 in the federal court for the Northern District of Iowa.