When the Federal Trade Commission finds a case of fraud perpetrated on consumers, the agency files actions in federal district court for immediate and permanent orders to stop scams; prevent fraudsters from perpetrating scams in the future; freeze their assets; and get compensation for victims.
https://www.ftc.gov/news-events/media-resources/truth-advertising
Good point. But that is lying accompanied with some sort of investment or purchase come-on. There is no equivalent for general misinformation, even when the target is your vote.
Your money gets more protection than your vote does. Your perception of reality is not protected at all, by the government. We swim in a sea of lies and half-truths.