Federal income tax is separate from the other two.
FICA has to do with SS.
Medicare has to do with social insurance .... interesting.
If Medicare is a social insurance program ... the tax you pay is your premium in contribution to the program....
Interestingly enough, France and Canada also have Medicare or some form of social insurance program. I have a hunch this may be international in scope. If this is the case, then there are greater implications not spoken ....
Insurance is squarely in the realm of Admiralty/Maritime law.
It is not unlawful for government to tax a benefit given (per the Supreme Court). I've seen this in one of the Supreme Court cases on Social Security. I'm guessing it is Flemming v. Nestor (1960), but don't quote me on it.
If you accept a benefit from government, expect there to be a tax.
If you want to reduce your exposure to taxes, decline the benefits
.
Cease to be a beneficiary.