A dozen Senate Democrats on Tuesday laid out the key principles they hope to see in a bill regulating the cryptocurrency market. The framework, put forward by Sens. Ruben Gallego (D-Ariz.), Mark Warner (D-Va.), Kirsten Gillibrand (D-N.Y.), Cory Booker (D-N.J.) and other crypto-friendly Democrats, offers up their view on the central issues underpinning market structure...