The NAACP of Pennsylvania endorsed a bill to regulate and tax marijuana last week. Sen. Daylin Leach (D) introduced  SB 528, or the Regulate Marijuana Act, in early April. The bill would allow adults 21 and older to possess up to an ounce of marijuana and to grow up to 12 plants. The bill includes safeguards to protect against driving under the influence and requires that the state develop a regulatory framework for overseeing marijuana sales. If enacted, Pennsylvania would become the third state…