Do what they did to Russia, kick the US the fuck out and start calling it the G6. It was the G8 from 1997 to 2014, they can stand to lose another.
The US is literally trying to kickstart an economic depression in the US. Why the fuck would you want these guys in economics talks when they clearly understand FUCK ALL about economics? A US depression will fuck up the rest of the world's economics as well, and that's clearly the long-term goal.