Libertarians are fond of noting that government projects can have unintended consequences; here's an example:

The reversal of the Chicago River a century ago, to send the city's sewage to the Mississippi River instead of into Lake Michigan, was hailed as an engineering marvel. Now Michigan is suing Illinois to potentially re-reverse the river to prevent the movement of voracious, invasive Asian carp into the lake.

Perhaps the right action now is to re-reverse the river, but perhaps that will have its own unintended consequences.  Any thoughts?

Besides, aren't carp good eating?   My grandmother made wicked-good smoked carp (using carp spear-gunned in Lake Erie by a neighbor at my grandparents' cottage).  Carp is a delicacy in Europe and Asia.

Think I'm kidding? Check out these carp recipes.