All USL match referees are members of the governing Federation or Association of which the host club belongs,* and are not assigned or employed by United Soccer Leagues. Match referees are assigned by the governing body utilizing numerous criteria, including referee certification level, respective league travel guidelines and availability. (*Referees for matches in Puerto Rico and Bermuda are assigned by US Soccer and include individuals from the USSF referee pool).

United Soccer Leagues assists in an advisory capacity, as applicable, with the respective governing bodies in respect to officiating procedures, referee performance assessment and referee development.

For more regarding the management and development of referees, please visit the respective Federation referee departments online...

US Soccer Federation:
Home: www.ussoccer.com  
Referees: http://www.ussoccer.com/referees/refdev/index.jsp.html  

Canadian Soccer Association:
Home: www.canadasoccer.com  
Referees: http://www.canadasoccer.com/referee/referee_docs.asp?top=banner_ref&sub2=8