Can members of a HOA board violate a covenant but hold a homeowner to the same covenant?

I live in a HOA that has a covenant that restricts trailers from being parked on and public or private street within the Property or any part of the lot, except that the recreational vehicle may be so parked if fenced is erected to block its visibility from adjourning street. Board Members have trailers parked where they are visible from adjourning streets. Is this legal to not hold them to the covenant but anyone else they do?