You are a history major ... when was last time US "won" a trade war
So to avoid a trade war, USA should let Canada, other countries bend USA over, and RAPE USA with Tarifs, and USA should just take it, not do anything about it.
Whether A country puts tarifs on USA, and USA does nothing, just accepts the tarifs put on USA, etc, or whether USA slaps back, starts a trade war by slapping a tarif back on a country, either way, the net result is a Tarif on the USA no matter what USA does, except if USA slaps a tarif back at a country, USA can say " Dont like that Tarif? That tarif hurting your nation? Well your tarif was hurting our nation. Tell you what, how about we both agree to drop tarifs on both our nations? If you drop your tarif on us, we will drop all tarifs on you."
That would work, stop countries putting tarifs on us, or at least might probably work better then doing nothing and continuing to take it in the rear, or asking or saying "Please don't rape us with a tarif", or "Dont rape us with a tarif"
Then after slapping back, and after all tarifs dropped, sign trade agreement that forbids tarifs.
Slapping back is the only language trade bullies understand.
Hitting them in their pocket book is the only thing they understand.