There are a lot of wonderful people in America who shouldn't be on the Supreme Court - and a lot who should be on the court who aren't such wonderful people.
To balance China, the democracies will need new friends - and India with its fast-growing economy, youthful population, and democratic politics seems the obvious candidate.
The great power the president has is that he is the most prominent person in the biggest media event on the planet. He has the attention of the nation and the world. When he speaks, everybody listens.