From the Overview: "Congress has enacted several laws to enable U.S. citizens and the federal government to monitor attempts by foreign governments to influence public opinion on political matters. Nevertheless, radio and television viewers may have difficulty distinguishing programs financed and distributed by foreign governments or their agents. In October 2020, the Federal Communications Commission (FCC) proposed new requirements for broadcast radio and television stations to identify foreign government-provided programming."
CRS In Focus, IF11759
Congressional Research Service: https://crsreports.congress.gov/