Civil War II will not be like Civil War I.
Instead of Armies taking to the field and engaging in battle states will simply begin ignoring the Federal Government.
The Progressives have already set the precedent for doing this by ignoring Federal Laws (such as creating “sanctuary cities” and not working with immigration).
It will start out small but over time states will join together to begin the process of bringing the Federal Government back under control
Three things need to be done -
1 Repeal the 17th Amendment = Return selection of Senators to the states. The purpose of the Senate was to represent the States and the House to represent the people. As it is today it is too easy to “buy” Senators. If Senators had to answer to the state it would make buying influence more difficult.
2 Repeal the 26th Amendment - Return the voting age back to 21. It is clear that 18 year old are not mature enough to make critical decisions.
3 Get regulatory bodies under control. Limit their power to advisory role only and force congress to vote on any regulation before it becomes law. Put a sunshine clause in every regulation so they expire unless there is another vote.
2 Repeal the 26th Amendment - Return the voting age back to 21.
To do what you want, we’d need an amendment that not only repealed the 26th, but stipulated that the minimum voting age nation-wide be at 21.