Until somebody actually gets arrested for this, (by whom? Federal Marshals??) e.g. driving through a Texas school zone on an OK permit, nobody will have standing in Federal court to challenge the Act as unconstitutional (just like the first GFSZA was tossed by the SCOTUS). The fact that thousands upon thousands of citizens are committing this theoretical crime daily without any repercussions leads me to believe that US Attorneys aren't going to go there, knowing that they will end up on the wrong end of Justice Scalia.