President Xi Jinping may be able to meet the interim trade demands of a harried US President, but can he also satisfy the needs of his Communist Party and the Chinese people?

China's slowing economy, the growing Western resistance to its trade policies, and now the defiance of Hong Kong's middle-class millennials and voters together cast a shadow over the Communist Party's dream of an enduring social bargain: Western-style prosperity in exchange for popular acceptance of the party's continued political monopoly.