When it comes to the economy, President Trump's "America First" mantra has meant renegotiating existing trade treaties and imposing tariffs on imported goods such as aluminum, steel and solar panels. Because they prioritize growth, G7 leaders, free-trade proponents and most economists oppose Trump’s anti-globalized stance.
Yes, but: Environmentalists and steady-state economists (i.e., those who study the physical constraints on economic growth) might secretly want to cheer. Why? More global economic activity translates to more natural resource extraction and greenhouse-gas (GHG) emissions, and vice versa. If you want to lower GHG emissions, tanking the economy is one way to do so.