Iconic singer and songwriter Willie Nelson, who is 91 years old, remains as passionate as ever as he speaks out against outdated marijuana laws and voices support for KamalaHarris , who he says will be good for most needed federal cannabis reform. “There are so many good people in prison right now just for having something on them. That ain’t right,” Nelson shared in a recent interview with NBC News. A longtime advocate, Nelson has been active at recent rallies, joining Harris and urging fans to support cannabis reform initiatives across the country, including ballot measures in Florida and Te…