Just a minor clarification, MLS/USSF created PRO basically to operate as a staffing agency. So PRO is essentially MLS. The referees have a union and that is the major obstacle to better officiating right now.I don't know the specifics, but i'm sure MLS has some kind of contract with PRO to be exclusive refs for MLS. MLS needs to put pressure on PRO to up their game and clubs/fans need to put pressure on MLS to do that.
Aren't the players union supposed to do some negotiations coming this off season? Better refs should be part of those negotiations.
if only that were possible. I would love to see what kind of training these PRO refs get. EPL refs go through some pretty rigorous training and simulations. I really doubt PRO refs do anything similar. I feel like they are on the level of rec league refs who just ref games as a side gig.