US Soccer has updated  its Referee Abuse Prevention Policy (Policy 531-9) which is designed to make youth and amateur matches more safe, more fun, and more empowering for everyone involved. The updated policy is to protect referees and restore respect to the game.  The updated policy includes stronger sanctions for any form of physical or or non-physical abuse towards referees. 

US Soccer Referee Abuse Prevention Policy 531-9 - Penalty Overview and Definitions 

For more information, please visit the Federation's website at Referee Abuse Prevention Policy | U.S. Soccer Official Website.