A federal statute just signed into law by the President provided that school districts no longer needed to recognize the tenure of elementary school teachers—all tenured teachers would lose their status and would be treated the same as nontenured teachers. The effect of the law would be to allow all tenured teachers to be fired more easily if their performance was not adequate. The law also allowed the salaries of tenured teachers to be lowered, at least until a new contract with the teachers could be negotiated. The law had a two-year grace period before it was to take effect, to give schools and teachers time to adjust to the law; however, it specifically provided that once it is in effect, school board actions under the law supersede any existing contract terms. A public elementary school district is in the first year of a three-year union contract with its teachers. The school board has stated that it plans to abolish tenured positions as soon as the law takes effect. The union, believing that numerous terms of the contract will be invalidated when the law takes effect, filed an action in federal court on behalf of the teachers, asking for an injunction to prevent the school board from abolishing tenured positions and for a declaratory judgment stating that the law is invalid. Should the federal court hear the case?