The gov't, via a law, defined the 2nd amendment. What is being consisted today is how we define that line. I guess machine gun Kelly and the FDR charm allow the 1934 law to be written. It was wrong then, but we are living with its results. We have already messed with the constitution long ago in a different generation - we have to deal with what we have. in 1934 they rewrote the 2nd amendment, we don't need to do that again.