Citizens have rights. Remittances are foreign aid. Citizens rights to representation in this matter have been abrogated.
If you want to convince the Congress to institute foreign exchange controls and prevent any money from ever leaving the country, and likewise to regulate possession of foreign exchange within the US (since otherwise it is easy to evade the previous), you are free to lobby for it. No rights lost at all. I won't support it because they uniformly fail in practice as well as being economically inefficient and unjust, but you have full political freedom to campaign for them. That you haven't, and haven't won such an argument, it not any reduction in your rights. It is just not winning a political argument.
I have a right to tell you how to spend your money? Sign me up.