Why did the colonies wanted religious freedom?

Due to the Puritan’s strict Catholic religion, this led to the creation of the individual colonies who, in turn, wanted to have their own religious freedom instead of being forced by the Puritans to believe in the same religion as they. Not to mention the Puritans wanted the government and everyone else (workers and tax payers) to pay in order to show their support for the Puritan church(s).

Hope this helps!

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make 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.