An incident in one of last weekend's November internationals has sparked outrage.
A clear out from USA's Siaosi Mahoni is courting huge controversy after he was only shown a yellow card despite clear, brutal contact with the head of an opponent..
Referee Tual Trainini's decision to hand out just a yellow has prompted a fiery response from campaigners pushing for improved safety in the game. World Cup-winner Steve Thompson has also called for sanctions against the referee.