A 5% tariff that escalates every year by 2% against countries that tariff us. Then the tariff is in the hands of the other countries. Just like China ties their currency to ours we tie our tariffs to theirs.
I have no problem with tariffs against those who put tariffs against us, and I wouldn't wait to levy them.
As for countries such as China, I wouldn't allow direct trade with them at all, due to an oppressive government.
My point was that blanket tariffs aimed at promoting domestic industry will fail.
That said, be aware that when you start calling devaluation of currency a tariff (which it is), everyone in the world can point to us as the biggest culprit.