I don't pretend to see the future, but not being in the club means you can't vote in the club and won't get the benefits of being a club member. It's that simple. As for other 'clubs', why would other nations fully trust or believe the US after recent zig-zagging and reversing course. My guess is that while other nations will accept some change in direction, say in response to trade deficits, a hardening or softening of tariffs for example, arbitrary complete changes in direction are another matter. Why go to the effort of negotiating a deal when it looks very likely to be thrashed the next election? The looser is other nations trust in the stability of the US in terms of policy. On the road you should change lanes carefully and turn at junctions or off ramps, the world sees the US weaving in and out of traffic and driving on the wrong side of the divider like a drunk. It's not the change, it's the erratic nature of how the changes are made that generate distrust.