The oath of office and similar things? No, there is no such portion.
No the President's veto power is part of the checks and balances on Congress.
the practice of untouchability.
Religious Test
passing ex post facto laws
i forbid you from going outside
The original Constitution did forbid an official religion for the nation. However, everyone in the US has the right to religious freedom.
the answer is 10 years
It means that states can do what they want to do, IF the Constitution doesn't forbid it.
It forbid slavery and reconized equal rights.
In a sense, they are the guardians of the Constitution. Each justice takes two oaths of office swearing to uphold its principles. They are also the final authority on interpreting the meaning of the Constitution.
I would guess it is to avoid the problem of divided loyalty.
"reserved powers".