WASHINGTON—The Trump administration is heightening scrutiny of China’s large condition-owned media retailers in the U.S., designating them as international diplomatic missions, in a further more hard work to rein in Chinese govt action.

The Point out Division claimed Tuesday that the U.S. operations of five Chinese news organizations—Xinhua News Agency, China Radio Global, China World Television Network and the distributors of China Every day and People’s Daily—will be regarded international diplomatic missions.