The US plans to cancel visas for some Chinese students, especially those in important fields or with ties to the Chinese Communist Party. This decision has caused a lot of worry among Chinese students in the US. China is the second biggest source of international students in the US, and this move has led to a formal complaint from Beijing, which calls the action unfair and discriminatory. This situation has made relations between the US and China more difficult, leading some students to choose to study in other places, such as Hong Kong.