Couldn’t have anything to do with Federal regulations or taxes. Oh no. It’s always just evil businessmen and cheap labor. /s
It’s all of the above. But it’s national suicide to dump our manufacturing base while leaving all the other baggage in place.
But the labor can be quantified and it's always a huge number. Some of the first moves of plants to cheap labor nations in Asia cut labor to 10%, or even less of US wages. Wages in Mexico have increased some with so many US and other plants locating there.
Manufacturing labor costs in Mexico are approximately 1/5 of those in the United States.
Can you quantify these other factors you mention?