Does U.S. Ski & Snowboard have a social media policy?  

Yes, U.S. Ski & Snowboard does have a social media policy.

Here it is: 

From the policy: The purpose of the social media policy is to encourage volunteers to share their voice online in a positive, effective, and constructive manner.  Content placed on any social media platform is public information and may be viewed as a direct reflection of the volunteer, U.S. Ski & Snowboard and its teams and constituent brands.