Everyone argues about the militia part of the 2nd amendment but I have never heard anybody bring up Title 10 Chapter 13 of US Code. It states:
"The militia of the United States consists of all able-bodied males at least 17 years of age and, except as provided in section 313 of title 32, under 45 years of age who are, or who have made a declaration of intention to become, citizens of the United States and of female citizens of the United States who are members of the National Guard."
Does this section have any relevance?