When the president and his advisors formulate a plan primarily designed to protect the independence and political integrity of the United States by strategizing defense against actual or potential enemies, this is referred to as:

Answer: National security.

Explanation:

National security is the maintenance of the safety and wellbeing of a state through the use of diplomacy, political and economic power, etc. it could also be the ability of a state to protect itself from any form of attack or treats.