According to
http://usasf.net/contact/governance/ the USASF Board of Directors has 13 voting members and 3 non voting members, for a total of 16. The difference in the 21 on the page you linked to and the 16 I reference being the Alumni Members.
Of the 13 Voting Members, 5 are representatives of Varsity Brands (ACA, NCA, UCA, UDA, and USA), and bolded below. Those that say the USASF is controlled by Varsity often include the USASF Representatives, Jim Chadwick and Steve Peterson, as Varsity people because they worked for Varsity immediately prior to USASF.
The USASF Board of Directors:
- USASF Chairman – Jim Chadwick
- USASF Representative – Steve Peterson
- ACA Representative – Lance Wagers
- CHEERSPORT Representative – Jeff Fowlkes
- JAM Brands Representative – Aaron Flaker
- NCA Representative – Karen Halterman
- UCA Representative – John Newby
- UDA Representative – Catherine Morris
- USA Representative – Mike Burgess
- NACCC Representative – Elaine Pascale
- Coach Representative – Jody Melton, Cheer Athletics
- Coach Representative – Mac Hirshberg, Mac’s All-Stars
- Coach Representative – Happy Hooper, ACE Cheer Company
Non-Voting Members:
- IEP Representative – Colleen Little
- JAM Brands Representative – Steve Wedge
- Varsity Brands Representative – James Speed