Simple - we return to the policies, provisions and laws that were on the books before the madness of free trade struck. This isn't trig. Anti dumping laws and tarrifs were in place to put a stop to unfair trade before it could subvert our economy and put businesses out of business. Absent those protections, what has happened but a proliferation of unfair trade that is subverting our economy. Simple in terms of the necessary steps. Huge task when considering what it takes to get a congress critter off his laurels to do something other than a photo op in some cases.
That is fine, you are therefore willing to accept higher, in some cases much higher, prices for what you buy. The bottom line is your standard of living will decline and so will mine.
Please make sure you get everyone to agree to this before we start enacting any laws.
The answer is not protection, the answer is to compete.