If I sign up for an account on Facebook, then I agree to waive my first-amendment rights.
If I walk into any number of stores or churches or government buildings, I agree to waive my second-amendment rights.
Sixth amendment? Just keep redefining "speedy" and make enough excuses for trials delayed and justice denied.
Tenth Amendment? If a state passes a law judged odious by the Federal Government, then kiss your funding sources bye-bye!