Suppose the U$.$S$.$ President wants to conduct a covert cyber operation designed to promote democracy in the fictional country of Cacophony. Before the President can authorize a covert cyber operation, which one of the following statements represents an actual legal requirement before such a covert operation may be conducted:

There must be certain written findings relating to the proposed covert operation.

By a simple majority vote, the U$.$S$.$ Senate must first approve of the proposed covert action.

The President must notify the United Nations

The President must notify NATO.