I agree. And do you want to be guaranteed that process because you want to keep the government honest before it deprives you of life, liberty, or property? As you said, you expect to be punished if you break the law. Presumably you also expect not to be punished if you don't. Isn't the process how we keep the government on the right side of that line? And isn't it especially important to keep that line in place given the immense power and resources the government has?
So, my question again is: If you can achieve the same result (deportation to El Salvador) or substantially the same result (deportation to some other country) while following the law, why would you not want to do that?