Getting a USGA Handicap Index
While the USGA® develops the formula used in tabulating handicaps, it does not issue them directly to individual golfers. A USGA Handicap Index is issued through licensed golf clubs that follow all the procedures of the established USGA Handicap System?. The USGA definition of a golf club can be found in the link below as well as U.S. and foreign golf associations that are licensed for handicap purposes.

Finding A Golf Club

Definition Of A Golf Club
U.S. Golf Associations Licensed For Handicap Purposes
Foreign Golf Association Lookup

Forming Your Own Golf Club

The USGA Handicap System Licensing Program For Clubs