President Trump is scheduled to be in Council Bluffs, Iowa next week (9 October), and he has hinted that he’ll unveil the administration’s plans to approve year-round sales of E15 at that time. This is not the first time that expectations on the issue have been set, evidenced by the following:

In May, Senator Charles Grassley (R-Iowa) announced that the president had instructed the administration to move forward with a rule to allow year-round E15 sales. In July, President Trump said on a visit to Iowa that approval of the new E15 rule was “very close.” In August, USDA Secretary Perdue announced during a speech (also in Iowa) that the president wanted to sign off on an E15 rule by “next week.”

Ass...