 Sioux Falls Mayor Patrick Tenhaken is scheduled to speak at the news conference on a campaign to stop a measure meant to eliminate grocery taxes. If passed in November, IM28 would repeal what's known as the grocery tax, or the tax on anything sold for human consumption, including non-alcoholic beverages. Mayor Tenhaken opposing IM28 as he believes it would create a huge gap in the budget and lead to the creation of a state income tax.