The US gun culture resembles nothing like "a militia officered by men chosen from among themselves, fighting for their common liberties, and united and conducted by governments possessing their affections and confidence."

This was also before modern military with armored vehicles, aircraft, missiles and drones. I wonder what ratio of untrained handgun touting joe sixpacks would be needed against that.

If you want to get an idea what was meant with the militias at the time, look at maybe Switzerland. Or perhaps even countries with conscript armies.