A report to the U.S. Congress released on Wednesday accused Chinese state media entities of involvement in spying and propaganda and said their staff in the United States should be required to register as foreign agents.

The annual report of the U.S.-China Economic and Security Review Commission said that while China had tightened restrictions on domestic and foreign media, Chinese state media rapidly expanded overseas.

The commission, created by Congress in 2000 to monitor national security implications of U.S.-China trade relations, said China's state media expansion was part of a broader effort to exert greater control over how China is depicted globally, as well as to gather information.