Tucked inside the National Defense Authorization Act (H.R. 6395), which just became law, is a new requirement for federal military and civilian law enforcement personnel involved in the federal government’s response to a “civil disturbance” to wear visible identification of themselves and the name of the government entity employing them.
Actually yes:
https://www.aclu.org/news/free-speech/new-law-requires-federal-agents-to-identify-themselves-to-protesters