Collective bargaining has always been the bedrock of the American labor movement. I hope that you will continue to anchor your movement to this foundation. Free collective bargaining is good for the entire Nation. In my view, it is the only alternative to State regulation of wages and prices - a path which leads far down the grim road of totalitarianism. Those who would destroy or further limit the rights of organized labor - those who would cripple collective bargaining or prevent organization of the unorganized - do a disservice to the cause of democracy. 

John F. Kennedy, Special Labor Day message as the Democratic Presidential Candidate, Sep 05, 1960