(Bloomberg) -- Cryptocurrency exchange Kraken must face a US Securities and Exchange Commission lawsuit accusing it of operating an unregistered securities exchange, a judge ruled. Most Read from BloombergChicago's Migrant Surge Is Stirring Trouble for Democrats in DNC Host CitySydney Central Train Station Is Now an Architectural DestinationWith Housing Costs High, Democrats Hone YIMBY MessageWith Self-Driving Vans, Hamburg Tries to Make Microtransit WorkUK Transport Minister Clears Path for Mor