Michigan’s legal fight to stop Asian carp from invading the Great Lakes is far from over, but it has hit another setback in the U.S. Supreme Court.

For the second time in recent months, the high court on Monday rejected — without comment — Michigan’s request for a preliminary emergency injunction to close Chicago-area locks. The Court had turned down Michigan’s original request in January. Michigan filed a renewed motion, citing new DNA evidence of Asian carp slipping into Lake Michigan and a study that allegedly contradicted Illinois’ fears of major economic losses, but the Supreme Court didn’t bite.