Not really, he backed down on tariffs last week thanks to Canada and Japan. The truth is, Trump has put the US into a very, very precarious position. They have a lot of debt to refinance soon, and if the rest of the world wanted to, they could dramatically increase the interest rates paid on that by coordinating a sell-off of US debt.
Although I doubt it, hydrogen can be produced using renewables.
It's still going to be significantly "greener" than using methane as a propellant, though.