Your willingness to obey the laws of the land is a form of slavery…
Paul said to obey the law, but he also said not to volunteer for slavery. So it seems that, according to the bible, slavery and obeying the law are two distinctly different things. Applying the term “slavery” to obeying the law is only word play. It’s not biblical though.
However, I do understand what you are saying. In some sense nobody is
totally free, since there are rules for everybody. And nobody is totally enslaved, because everybody has some sort of freedom, even if it's an extremely small amount. So we
could call the lack of total freedom by the term "slavery". (And doing such a thing would result in a lot of confusion on exactly what is meant.) That would mean that Paul meant we shouldn't
further enslave ourselves. But, being that
nobody has
total freedom, the term slavery should be reserved for those who have a logically distinct lack of freedom.
Sure you can make decisions, even voice your opinion, but at the end of the day you still bend to the law of man.
There is nowhere that you could live where the law doesn’t apply. So if it were actually slavery, it would be an unavoidable slavery. And, based on what Paul said, we still shouldn’t volunteer for
further enslavement.
The birth certificate is your contract to the United States…
I don’t understand how it’s a contract. I’m not obligated to do anything because of it.
…you were born here, so you fall under its protections, and its rules.
True. I don’t see how its protections are relevant though. But, as far as rules go, no matter where I was born I would be under the law of the land.
…you choose to be bound. You can just as easily pack up and leave, leave everything…
And move where, outer space?

There’s nowhere that I could move to where the only laws I’d have to obey are God’s. No matter where I live, I have to obey the laws of man. They’re unavoidable.
But since you haven't done this, then I can come to the conclusion that you accept the way things are.
I accept the laws because Paul said that I should, and I have no legal way to avoid them. Like I said, the law is everwhere that I could move to.
I do not mean to try to contradict or re-word something Jesus said. But to take all meanings directly seems to go against the lesson that is trying to be taught.
I don’t see how it goes against the lesson. You summed up what you consider the lesson;
“The only reason I can see that Jesus would say to not swear to anything, is probably because you can never know what promises you can keep. Probably Jesus's way of keeping people from becoming liars.”If that is the lesson, it’s probable that it’s really only
part of the lesson. There must be more to the lesson than that, since Jesus didn’t give exceptions to the rule, like He did with other things.
A promise to do good cannot be a wrong…
Accomplishing something good by sinning is still wrong.
…but breaking that promise would be [wrong], it would make you into a liar.
True. I’m not advocating breaking promises. I’m advocating not making them in the first place.
So he gives an alternative, instead of giving a promise you may not be able keep, why not just give your word (which is measured by your character) to do what you can. That way you will not put yourself in the position to be a potential liar.
So what He said was a suggestion, not a command? What Jesus said regarding promises seems to be a clear command to me. If it’s not, how could you distinguish between His suggestions and His commands? Maybe telling us not to divorce was only a suggestion too. Maybe His lesson was just to let us know to take marriage seriously. We could unravel everything Jesus said by making assumptions like that. Sadly that’s actually what many people do when they want to do something Jesus was against.