Presumed guilty until proven innocent?

In yet another case of turning the rule of law upside down, the Gestapo in Maryland intimidated a legal gun owner, even though he, quite correctly, was not carrying any weapons at the time. While I am a fervent supporter of states rights, incidents like this make a strong argument for a federal law that makes a CCW license like a drivers license, valid in all states. In this particular case I hope that a pro-gun lawyer will take the case and sue the relevant police department heavily for the inconvenience and mental anguish. It is time that we remind these bullies that they are supposed to serve the general public and not look for excuses to turn them into accidental felons. There are very many reasonable law enforcement  officers and it is a shame that these thugs spoil it for the rest.
http://www.nraila.org/news-issues/articles/2014/1/concealed-carry-licensee-gets-ungracious-reception-by-police-in-charm-city.aspx