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More than likely, if somebody contracted out of US Constitution and laws, nothing would happen to him. People are too 'sheeple' to do anything to him outside of the laws... most of the time. However, he could be wrong about that, and somebody just might shoot him dead on the spot
Then THAT shooter guy would have to contract out of the Constitution and laws to keep from being adjudicated to be a murder. But because he did a social service to the community, people might cheer him rather than lynch him.
A point is, probably it's a good idea that bad guys don't know about the Contract Clause and how they could uses it... because some of them would get away with the bad that they are doing... which happens enough as it is.
That sounds almost as stupid and ineffective as some random guy declaring himself to be a sovereign citizen as a legal defense. If people in your country could opt out of being held to account through the way your describe then there would be already people using it to get away with all sorts of crimes and bad deeds. I don't know anything about the legal system in the United States but I can tell that like in any other western society, the people of your country are subjected to the law established there as long as they are citizens of USA and reside there.
Otherwise, I would have already seen some bank-robber being released from prison because he renounced the contract he had with the USA government or whatever you are talking about.
Perhaps, you should give Trump a call and talk about that silver bullet of a legal defense (or lack of it), so he can get away with all the indictments he has over him.
It is kind of weird his team of very expensive lawyers have not mentioned such option for him yet, dont you think?
Lots of things sound stupid and ineffective to you. Remember that you have said several times that you are not a US citizen, and therefore don't know about how the US works... or words to that effect.
Declarations about being a sovereign citizen are stupid. Why? If you are a citizen, you are not sovereign. If you are sovereign, you aren't a citizen. If someone uses that term, he needs to add explanation about it so that it's not contradictory on its face.
There are people in the US who have used the idea of 'no contract' with the government to contract out of problems with government. As I have explained in other posts, writing the words "non-assumpsit" on the signature line ahead of your signature means "no-contract" regarding what you are signing. Depending on the info that you write in the contract, it can mean exactly that, no contract. However, if you show that you are contracting by the words within the body of the contract, you are contradicting yourself by using "non-assumpsit," and your word and signature are deemed not trustworthy. A wise person won't do business with you in this case.
Consider
"Fraud upon the Court," and
"Fraud upon the Court by the Court." Those are legal terms that have been used by many people regarding their case for over a hundred years... where the judge has made a mistake and will not correct it. All it is, is contracting out of a judicial decision where the decision seems to be wrong. Also, if you are really interested, check out
https://duckduckgo.com/?q=Fraud+upon+the+Court+by+the+Court%2C+cornell&ia=web. This will start to show you both the simplicity and the complexity of the US legal system.
Also, you miss the whole point of contracting into the US legal systems. As I said, if the joker contracts out of being heard or being under the judicial system, the people who have been harmed by him, have no other recourse. They might simply, covertly, hire a hit man to take the joker out, simply because he owes them something for his wrongdoing, and the Constitution and laws failed them. So, the point is to remain contracted in, so that you fall under "due process of law" where you have the chance of being set free legally.
As far as what Trump is doing, he probably realizes this^^ stuff, even if he hasn't put it into simple words like this. You need to remember that Trump is acknowledging the Constitution and laws, because he is running for President. Until we become much more knowledgeable about law, and advised about the details of Trump's case, there is no way to determine what is the best course for him to take.