If carp are denied entry into the Great Lakes --- and, sadly, I don't think that they will be--- it will be despite the feds, not because of them. Alongside Illinois, they have put up barriers against the efforts of Michigan and other Great Lakes states, instead of against the carp, to keep them from migrating from the Mississippi River basin and into Lake Michigan through a manmade connection.
Already carp DNA has been found in mulitiple places above the electric barrier and a live carp was found above it as well. In response, the Obama administration appointed a carp czar and initiated a five-year study.
As a result, Michigan Attorney General Bill Schuette announced that he will keep the pressure on to stop carp from entering the Great Lakes through Lake Michigan. In a press release provided me by Rick Balabon of the Michigan Steelhead and Salmon Fishermen's Association, Schuette said: