See this is your problem. You claim that the low number of manufacturing jobs that are union backs up your theory. When it actually disproves it.
Unionistas want to tax and regulate the market to try and force companies to create jobs in the USA when that is exactly why they are disappearing.
Try and learn its not working AND MORE OF THE SAME WILL MAKE IT EVEN MORESO!
Bull crap the number of Right - Work - States is growing. Union presence in manufacturing is dead and nothing will bring that back. Get real. So what is the percentage? DO YOU KNOW THE ANSWER?