Huffington Post:  “‘Marijuana Industry Eager to Pay Taxes — and Cash in on Deductions’ says a recent McClatchy headline. There’s a conundrum: The state-legal marijuana industry (1) understands that a new federal excise tax would give it legitimacy, but (2) seeks repeal of the discriminatory Reagan-era statute saying that taxpayers ‘trafficking’ in ‘narcotics’ cannot deduct ordinary business expenses on their Federal income tax returns.  But that current no-tax-deduction rule makes marijuana advertising nondeductible – and that probably makes sense. For most proponents of marijuana legalization, advertising is a frill, not an essential. But for opponents of legalization, marijuana advertising is anathema.