The USA has a prime example of what would happen if they removed the patriot act, that is shipbuilding industry in Canada. The industry need doesn't sustain itself at those costs and Canada's cost for labour are much lower than the US's.
We are trying to reboot the industry here and I am not kidding when I say it will take 2-4 decades so I can only imagine what the US will lose if they give up the Jones act.
The US already lost the vast majority of its shipbuilding industry. Jeffboat was one of the few US manufacturers the Jones Act tried to protect and Jeffboat went bankrupt and shut down for good in 2018. (Jeffboat was an historic shipbuilder going back to the golden years of the steamship.)
We are trying to reboot the industry here and I am not kidding when I say it will take 2-4 decades so I can only imagine what the US will lose if they give up the Jones act.