I cannot provide you with information and sources. However, I can give you some topics to search and find your information on.

Drug related street violence and crime rate

Imprisonment and money for these imprisonments (and how less money would be needed for pointles imprisonments)

Health benefits
(How it helps with loss of appetite, stress, anxiety, and also nausea..Also no overdose risks)

there is an article somewhere posted in the forums about "10 reasons why the government wishes they never funded research of marijuana" or something like that...I think I have it but its on my lap top...I will post it in a second...

Just some things to think about...