The Trump administration attempted to roll back almost all the regulations that made our air and water cleaner, both within the US and around the world. And the tariffs didn't work because tariffs don't work. They might have worked better once upon a time but in a global economy they won't work. we have set things up so that certain things are made by certain countries and other things by other countries and manufacturing doesn't just turn on a dime. And for the most part tariffs just mean you pay more for stuff and nothing changes, and the other country puts tariffs on you so you're screwed coming and going.