美国驻中国大使布兰斯塔德在华尔街日报发表文章

“What we would point out is we have a very open market in the United States. And that’s not true in China.

“As an example, companies like WeChat can operate in the U.S. But Facebook, Google and these companies cannot operate in China. Cloud computing is heavily restricted.

“There are a lot of areas where we’d like to see more reciprocity, and we’d like to see China being just as open as the U.S.”

The ambassador also said: “But the U.S. also recognizes we need to protect our national security, and we need to protect against losing some of these critical technologies in which we are the world leader.”