That is the main problem trying to be addressed, and maybe some tariff's aren't the worst idea to get some manufacturing back into the US.
But the pointlessly confrontational, uncertain, ever-changing roll-out plans, just makes it worse for everyone. It is "bad for business", and especially the remaining manufacturing we have in the US and Canada. I think sneaking in some single digit tariffs on key industries could've started the process of bringing manufacturing back without blowing the whole thing up.
I think many companies with manufacturing facilities in N.A. with cross border supply chains, could just shut down for a few weeks and see if this is going to stick or not, before deciding to invest billions on building a more expensive supply chain that will be vulnerable to the resumption of free-er trade?