Trade negotiations are underway. This is a part of that, as was the initial ban. Trump does this again and again: he creates leverage in the form of negative consequences should he walk away from the table. Then he gives some of it back much to the relief of the other side, in exchange for something else he needs. He negotiated thousands of deals, some of which were very complicated. It could well be that he’s the strongest negotiator we ever had in that position.