Gov. Eric Holcomb said the Environmental Protection Agency already requires E15 to be labeled and called Senate Enrolled Act 303 an "unnecessary and confusing" additional layer of government.

Farmers are worried the partial federal government shutdown might further delay a proposal to allow gasoline with 15 percent ethanol to be sold year-round.

President Donald Trump mentioned the possible policy shift during a visit to Iowa last week. He said the Administration is working on rolling back restrictions that ban higher ethanol blended gasoline during summer months.

President Donald Trump reportedly agreeing to allow year-round sales of gasoline with 15 percent ethanol could be food for Indiana corn growers, but environmentalists aren't thrilled.