Axios Des Moines: Iowa’s longtime goal to replace 25% of petroleum used in gasoline with biofuels by 2020 fell far short, a new report from the Iowa Department of Revenue shows. The state reached a record 14.5% last year, yet was still short by roughly 226.2 million gallons needed to reach the mark set by lawmakers in 2006. Former Gov. Tom Vilsack, now serving as U.S. agriculture secretary, signed the goal-setting bill, which was promoted as the most aggressive renewable fuels standard in the nation and received nearly unanimous support in the House and Senate.