The United Steelworkers of America, a national union, had a provision in its constitution that imposed requirements to be satisfied before a member could run for leadership positions in local affiliates. The limitation was that to be eligible to be a local officer, the union member must have attended at least one-half of the regular local meetings for the three years prior to the election. Is this restriction legal? (Local 3489 United Steelworkers of America v. Usery, 97 S. Ct. 611)