If you're trying to claim that giving Chinese youth student visas to study at elite western universities will create a more liberal, pro-western intelligentsia in China, you are flatly wrong.

The Chinese who come here (to the US) are part of the growing Chinese middle- and upperclass and tend to be the most nationalistic of all. Talk to them next time you get a chance; ask them what they think of democracy and freedom, and they'll likely spout PRC government propaganda about how the "Chinese people need to be controlled." We make them into scientists and engineers without succeeding, and perhaps without even really attempting, to make them democrats. We are potentially creating big problems for ourselves and our western and east Asian allies down the road by equipping China with the skilled professionals it needs to produce the weapons of war to threaten the free world.

As for protectionism, if it really bothers you, perhaps you should complain about China's "luxury tax" (import duty) and government-mandated technology transfers for access to their production and consumer markets. China is easily the most protectionist member of the G20.