The Supremacy Clause works fine as long as the Federal Law is Constitutional. Any law that violates the 2nd Amendment is Unconstitutional. Period. Go Louisiana. This is a fight worth fighting!
Well, if you’re preparing to fight the feds in court, the first step is probably getting over the idea that federal courts rulings are binding. In normal criminal and civil litigation, they wouldn’t let you sit on the jury if you knew one of the parties. With the feds, it’s OK for them to WORK for one of the litigants.
The American people need to demand that all of these low tier public servants involved in these Bill of Rights violations be tried and sent to prison where they belong.