How did the Iranian security forces respond to the attack on the US embassy? They did not come to help.
They led the rescue.
They waited an hour to arrive.
They entered on the upper floor.

They led the rescue.

Explanation:

Hope this helps! :P

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.