amendment-Legal Definition. n. 1  The addition, deletion, correction, or other changes proposed or made to a document. 2  The term is usually capitalized when referring to an amendment in the United States Constitution (for example, the Fifth Amendment). 3  The act or process or revising something. 4  See also emendation.
On June 1, 1979, the NHL enacted a rule requiring the wearing of helmets for anyone entering the league after that date, though a âgrandfatherâ clause allowed diehard veterans to continue to go hatless if they wished.
The short answer they don't want to get sued. No helmet currently on the market can completely prevent concussions and the long term effects that come with concussions. So they refrain from requiring players to wear something that they are not sure will 100 protect the players. All they can do is make recommendations based on studies of helmets and hope players make the right choice. Player is forced to wear a helmet like the Riddell VSR-4 but still suffers a concussion. He sues the NFL for not giving him the option to wear another helmet that he says would have prevented the injury.