Well, as it turns out, as it usually turns out with the government, they like to meddle. They don't always know what they're doing, but they like to try things. In this case, what they are doing is destroying fisheries and rivers for boating.
[T]here are loads of tax-funded culprits tied to the four species of Asian carp - bighead, silver, black and grass - that have now invaded U.S. waters. By and large, the people who unleashed these fish on our environment were well-intentioned government and university biologists who thought they could find a job for the giant foreign fish that are so devastatingly good at stripping nutrients from the waters.
Their goal was to replace chemicals with carp. It was to employ the fish for weed control, or to give them a job cleaning up sewage lagoons and chronically fouled waters on fish farms. They also hoped to cultivate a fresh food source for an increasingly crowded planet.
They had no concept at the time, but they were tinkering with a type of biological fire that escaped their laboratories and is now raging uncontrolled across the continent.
Read the article for consequences: endangered people, endangered wildlife. I'm sure Canada won't be happy about the loss of the Great Lakes, either: shall we wait ten years to tell them?
Now recite the famous statement that strikes fear into the heart of the taxpayer: "I'm from the government and I'm here to help you."
Not as irrational as some other fears, is it?