Moore, surrounded on Saturday by dozens of flag-waving and sign-toting Flint residents in front of the city's municipal complex, said he must "insist" that Obama visit on Wednesday, the same day the president is scheduled to tour the North American International Auto Show in Detroit.
Moore also asked the U.S. attorney general to arrest and prosecute Michigan Gov. Rick Snyder, because he "knew that toxins, pollutants, and eventually lead was leaching into the water and being sent into the taps of people's homes."
The U.S. Justice Department is helping the Environmental Protection Agency investigate events surrounding what's been declared a public health and federal emergency situation in Flint.
The Associated Press contributed to this report.