What was the job of the mobile killing squads in Eastern Europe?

Often referred to as “mobile killing squads,” they are best known for their role in the systematic murder of Jews in mass shooting operations on Soviet territory.

Explanation:

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.