> Exercise increased caution in China due to the arbitrary enforcement of local laws and special restrictions on dual U.S.-Chinese nationals.
> Chinese authorities have the broad ability to prohibit travelers from leaving China (also known as ‘exit bans’); exit bans have been imposed to compel U.S. citizens to resolve business disputes, force settlement of court orders, or facilitate government investigations. Individuals not involved in legal proceedings or suspected of wrongdoing have also be subjected to lengthy exit bans in order to compel their family members or colleagues to cooperate with Chinese courts or investigators.
> U.S. citizens visiting or residing in China have been arbitrarily interrogated or detained for reasons related to “state security.” Security personnel have detained and/or deported U.S. citizens for sending private electronic messages critical of the Chinese government.
travel.state.gov archived from 2018: https://web.archive.org/web/20180112180843/https://travel.st...