Five Great Lakes states are suing Illinois to force it to close two shipping locks. But US officials are pursuing other ways to keep Asian carp out of the Great Lakes, and even the Chicago mayor has a proposal.
Environmentalists express opposition to a federal plan developed this week to keep invasive Asian carp out of the Great Lakes.
Federal authorities are proposing to control, but not close, Illinois shipping locks in an effort to prevent the Asian carp from infiltrating the Great Lakes. Michigan Gov. Jennifer Granholm did not agree with the plan.