The reason forging and casting went away in the US is because of US trade policy with Russia and China regarding steel, Labor unions, the Social Security Administation, and the EPA.
The reason there are no start ups mass producing steel for Golf in the US is becasue of the EPA, the Department of Commerce, the SEC, Tax policy, and the Federal Reserve.
A long way of saying it's cheaper to go and too expensive to come back. The US had the highest wages (comparative) and made the cheapest goods for a very long time.



















