Sorry to burst your bubble but the steel tariffs are already being rolled back in exchange for european concessions on some of their protectionist measures. The US tariffs were a bargaining chip. It's hard to get other countries to deal on trade if you unilaterally disarm.
I hope you are correct. I have not seen a reference to the roll back. I have seen several articles where Euroland and Japan were making preparations for retaliation. I also remain perplexed about the tariffs on Canadian lumber. What bargaining chip are we playing with Canada which is part of NAFTA?