Unions are one of the biggest Lobbyist in America!
And rules that give workers and employers more freedom is a bedrock of American principle. If unions can only survive by strong arm tactics (Laws, Bullies, Threats, Mis-Informationn, Fear) than they do not provide a service most workers wanted. When people have the option of staying in the union or leaving they leave in droves. And ask yourself why does the AFL-CIO forbid cameras and photographs in their HQ?
Here is a fact for you , Polls show non union people are happier than union people for one simple reason. They control their own destiny!