Sioux City native and runner Shelby Houlihan , who holds the U.S. record in the 1,500 and 5,000 meters, cannot compete for four years after testing positive for a banned substance. Houlihan announced yesterday that she consumed the substance by mistake by eating tainted pork in a burrito. The 28-year-old made the revelation just days before the start of the U.S. Olympic track and field trials. Iowa state Rep. Ras Smith is running for governor in 2022, he announced Tuesday, becoming the first