That federal law doesnt mean shit if you get arrested on a state level. Get arrested in GA with a concealed gun without a permit and see how far the constitution gets you.
You clearly don't know the law do you? The state of GA is part of the union. That mean that all fifty states must follow the Constitution. That why it called the United States. That why when a decision is made in the Supreme Court all fifty states must obey the Supreme Court decision.
The Constitution of the United States is the supreme law of the United States of America. It is the framework for the organization of the United States government and for the relationship of the federal government with the states, citizens, and all people within the United States.
The United States of America (also referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district.