The mayor of Walker, a small town near Baton Rouge that flooded in the August 2016 flood, wants to sue the State of Louisiana for flooding caused by the recent expansion of federal highway I12. (While the Federal Department of Transportation funds highway construction, the designed and construction is done by the state and its contractors.) A class action lawsuit was filed against the State after the 1983 flood, alleging that a different stretch of I12 blocked the drainage for a group of homeowners and caused them to flood. The plaintiffs were successful and won a sizable verdict against the state. Unfortunately, in Louisiana, there is no way to enforce a state court judgment against the State, so the plaintiffs were never able to collect the judgment.