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.
Yes. All US citizens, including the President, pay taxes exactly the same way.
Indirectly, as it says that "The Congress shall have Power To lay and collect Taxes . . ."
In the Articles of Confederation, the procedure by which Congress was to raise funds was by taxing the states.
congress
failure to pay taxes
no they do not have to pay taxes on their winnings.
Congress
The Congress could not collect taxes because the Articles did not allow them. The way they collected money was by getting states to pay but they still could not do that
The Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises, to pay the Debts and provide for the common Defence and general Welfare of the United States.
through taxes
Yes, Olympians must pay taxes on their medals as of now. However, they also receive money for winning medals too. Currently Congress is debating whether Olympians should have to pay taxes.
Article I of the US Constitution gives Congress this power.