You can tariff by country, or by product, not by a specific company. Of course current GOP is completely under the control of Trump, still President alone is not the government. He is only a part of it. But a big part of it, and sets the agenda.
You should view Trump’s outburst as a petulant child not getting what it wanted. Market understands that Trump will eventually chicken out and not reacting seriously. You can play shock-jock, but you need to continue to increase level of shock to keep the audience engaged. I am sure “showman” understands that and is feeling his ability to deliver ever increasing shock is limited.