During the second meeting of a bipartisan legislative working group, lawmakers and marijuana advocates spent four hours Wednesday discussing the next steps for medical cannabis regulations, including the potential creation of an independent state agency that would have oversight and regulatory control of the marijuana industry. Committee members asked a wide array of questions of some of the state's most influential marijuana advocacy groups - Green the Vote, New Health Solutions and Oklahomans for Health - ranging from growing and cultivation to the apparent clash between federal and state laws.