Naw. We'd have the same headwinds China is facing. Yes support in developing countries would be buyable. However the EU, Canada, and Australia would move away from us. We'd feel that, right in the GDP. Our Asian allies would likely maintain a veneer of friendship to help ward off China but they would also be moving to not depend on us anymore.

People underestimate just how much power and money the US gets from it's alliances. So while yes, China is there, they wouldn't move to take our position. The world would just return to a mutli-polar system faster than it already is.

As to Trump vs Biden. I refer to my comment above. Genocide is a deal breaker no matter what party letter is next to your name.