Answer:
The power that is not a power of Congress is D. vetoing bills.
Explanation:
Veto refers to the power vested in a branch of goverment -usually the executive- to postpone or cancel decisions of another branch. In the US, according to Article 1 Section 7 of the Constitution, the President may not approve a bill and therefore, chooses not to sign it. In that case, he is excercising the power of veto and has to return the bill unsigned to the Congress, where the bill originated.
Then, vetoing bills is not a power of Congress, but a power of the President.
