"Go swim in the Potomac," said Mayor Daley.
On Wednesday the mayor said that the U.S. Environmental Protection Agency wants to impose an unfunded mandate on Chicago by ordering expensive actions but providing no money. He added that the city has already done a good job of cleaning the river.
"If you take the days of the factories and all that, it's remarkable how clean the Chicago River is," said Mayor Daley. "This river is getting cleaner and cleaner by our actions, not by the federal government. The federal government has not been a big participant in cleaning rivers in America."
The mayor then pointed out that some people fish in the Chicago River.