Yes
no they do not have to pay taxes on their winnings.
The members and people working in and for the US Congress pay taxes just like any American resident. However the body itself does not pay taxes.
All puerto ricans are us citizen since 1917 and if they live in the states they have to to pay federal taxes.
Yes. They pay taxes and publish what they pay.
Being a freelancer means you are self-employed and if your earnings are greater than $400, you need to pay your taxes with the IRS. For those who are not US citizens or residents, you may inquire with your local tax authority.
Yes
No
taxes pay for all the public services such as education for an example.
47%
Taxes, mostly.
pay taxes
they should