WASHINGTON — Sen. Mike Lee, R-Utah, is calling for the reinstatement of Cold War-era media regulations, arguing they are crucial to crack down on the spread of “propaganda” and online information he says led to the assassination of conservative activist Charlie Kirk. Lee said he would introduce legislation in the next few days to restore a law originally passed in 1948 that put limits on what information the U.S. government could disseminate within the country, particularly for materials meant to “promote the better understanding of the United States” among foreign countries during the Cold War. Lee’s proposal echoes online petitions...