They certainly can do something about methane emissions in other countries, such as this proposal (which is similar to the EU carbon adjustment which came into

They certainly can do something about methane emissions in other countries, such as this proposal (which is similar to the EU carbon adjustment which came into force this year): https://juliabrownley.house.gov/brownley-introduces-legislation-to-reduce-global-methane-emissions/ https://juliabrownley.house.gov/brownley-introduces-legislat...