 says a 1980 Supreme Court case makes it pretty clear that it is not. But Louisiana's conservative governor, Jeff Landry, is betting on a Supreme Court reversal. The Landry administration and the attorney general hope to have the U.S. Supreme Court revisit that precedent. But until it reaches the high court, expect the law to remain blocked because only the Supreme Court can undo Supreme Court precedent. Chris Miller for CBS News, New Orleans.