The reality is that the government could become tyrannical, and the right to bare arms would not provide sufficient resistance. The reality is that the government of the United States has too many tools at its disposal. Part of the right to bare arms was the premise that the nation would never have a large standing army. In fact it is antithetical to the reasons and nature of the revolution.
Everyone assumes that the government would wage war through conventional means, or would engage the problem through a humanitarian point of view. The reality is that the soldiers that may serve the new regime would probably be brainwashed, and addicted to government produced narcotics. Then the government would disperse a biological agent to which only they hold the cure. They could even design it to be non transmittable via person. All they would do is say it was part of a public sanitation project.
Once that has happened all they will need to do is release the ultimatum. Come get your cure, and while you are here we will affix you with a slave collar packed with explosives and tracking technology with both visual and audio devices attached.
I know terrifying shit, but it could go from design phase to implementation in as little as a few months. We would be subjugated before we would even know what is going on, and once it had happened no matter how many guns we had we couldn't resist. They wouldn't even need to fire. Either they let the plague kill those who resist, or if they get the cure and put on the collar all they would need to do is trigger a remote detonation if any resistance were detected.
As always the freedom of the people is dependent on the values of a people. That nightmare scenario would not occur, because too many in government would object. Our cultural values are the reason the United States became a democracy and not a dictatorship.







