Are unions partially to blame for the downfall of America's economy?

Please do not get me wrong, I have been a union member all of my police career. I was very active in my union and we received many benefits from it. Now that I am retired, I have a chance to look at the whole union picture and its role in America’s economy. What I see is a vicious circle of union demands that has just about ended Americas once prestigious work force that made the words Made in the USA, three proud words. Workers demands for better pay has caused companies to charge more for their products and it just all goes around in a circle. Companies began hiring illegal immigrants for their cheap labor, causing American workers to lose their jobs. Companies using cheap labor from other countries, has also added to the woes of Americas economy. Question: where and when will it all end? Is America about to lose its title as the worlds leader in commerce?