President Trump is lifting a ban on sales of gasoline blended with 15% ethanol, which would allow year-round sales of gasoline that was previously unavailable during the summer season, reports Reuters.

The EPA is planning on publishing a rule that will allow the sale of higher-ethanol E15 blends, which was previously restricted from sale in the summer due to excessive smog concerns, according to Market Watch. The ban lift will also assist U.S. corn farmers who have pushed for greater sale of the corn based fuel, according to the Associated Press, and have been negatively affected by low corn prices due to the  U.S. and China trade war.

Current regulations set prevents the sale of of E15 during June 1 to Sept. 15, according to NBC News. Gasoline normally contains 10% ethanol. The year-round sale of E15 is also expected to create new restrictions on trading biofuel credits which act like currency and support the federal Renewable Fuel Standard which was designed in part to address global warming.

Certain refiners, such as the American Petroleum Institute, oppose lifting the ban, according to Reuters. Some refiners say the E15 blends can ruin older cars and potentially void warranties.