The cross certification form is here: http://www.ayso.org/Libraries/Resources/cross_certification_form.pdf
As the form says, you must get it signed by the USSF state referee administrator. The state administrator for our state association, "California North," is
Duncan Way, 1692 Mangrove Ave, #209, Chico,CA 95926
Contact him to see if you can handle this via scanning and e-mail.
After you get the USSF signature, you must do the following: