In this Aug. 19 photo, Asian carp try to make their way upstream on the Kansas River near Edwardsville, Kan. Though now only 10 inches long, some could reach 100 pounds and take huge bites out of Kansas' $250 million sport fishing economy by crowding out native fish.
(Travis Heying/Wichita Eagle/AP)
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.
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