House Speaker Beth Harwell and Lieutenant Governor Randy McNally formed a committee to study the potential impacts of legalizing medical marijuana in Tennessee. The committee will be chaired by Sen. Steve Dickerson, R-Nashville, and Rep. Jeremy Faison, R-Cosby, who has been a staunch advocate for medical marijuana in the Volunteer State. Speaker Harwell has recently said she is "open" to considering a law allowing medical marijuana in Tennessee and has launched a House task force to fight the state's…