If the United States wants to be a leader instead of a follower, it would be wise for the MLS to implement Video Reply Technology. Each coach could elect to use the new rule once or twice per half at their discretion. The ref review would have to amke a decision to keep or overturn within 30 seconds. If the MLS is not willing to do this, they should at least implement goal line technology like the NHL. When the ball crosses the line a red light goes off. This will certainly take nothing away from the game. How many more games is the world going to witness the refs upholding the wrong calls? Some national teams being wronged in the last year- Ireland, USA, England, Mexico, etc.
Can MLS do this without FIFA's approval?