Regulators appear to be getting serious about crypto as the space turns into one of the investing themes of 2020.A day after the Treasury proposed new rules on crypto movement, the SEC is expected to bring a lawsuit against Ripple Inc. by alleging it violated investor protection laws by selling unregistered securities when it sold (XRP-USD) to investors.Ripple led crytocurrency losses ovenight on the news, down over 17% to $0.4630. Others: Bitcoin (BTC-USD) -5.2%; Ethereum (ETH-USD) -7.2%; Bitcoin Cash (BCH-USD) -14.2%; Litecoin (LTC-USD) -11.4%."XRP is a currency, and does not have to be registered as an investment contract," Ripple CEO Brad Garlinghouse said in a statement. "In fact, the Justice Department and the Treasury's FinCEN already determined that XRP is a virtual currency in 2015 and other G20 regulators have done the same. No other country has classified XRP as a security.""Chairman Jay Clayton - in his final act -