supreme court justice holmes once included this statement in a majority opinion: "during wartime, utterances tolerable in peacetime can be punished." how did this statement inform the supreme courts later decisions on freedom of speech?

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.