Individuals having Yankee White clearances undergo extensive background investigation. Yankee White-cleared personnel are granted access to any information for which they have a need to know, regardless of which organization classified it or at what level. The Yankee White clearance includes requirements for U.S. citizenship and unquestionable loyalty to the United States.
There are three categories of Yankee White clearance.
Category one clearance is required for selected personnel serving in extremely sensitive positions in direct support of the President or Vice President. This includes: