The dismissal for 7 people was significant but not a surprise after the Michigan Supreme Court earlier said a different judge acting as a one-person grand jury had no authority to issue indictments.
At least a dozen people died and more than 80 people fell ill after untreated water from the Flint River caused lead to leach from old pipes, poisoning the water system city residents relied on.
In refusing to take up two cases involving the 2014 water crisis, the higher court has upheld earlier rulings saying neither city nor state officials are protected from being sued.
The new proposal is being criticized for not proactively replacing lead service lines across the nation. It also keeps the same threshold for lead in drinking water that the U.S. currently has.
LeeAnne Walters demanded action from local officials, confronting them with bottles of discolored water. They dismissed her for months. She meticulously documented lead levels in Flint homes.
Michigan is ending the free water distribution program in Flint, but many residents don't trust state officials who insist their water is safe to drink, so long as they're using a filter.
The FBI identified the assailant as Amor Ftouhi of Quebec. He reportedly yelled "Allahu Akbar," or "God is great," before stabbing an airport police officer in the neck Wednesday in Flint, Mich.