"My attitude is if the science and the doctors suggest that the best palliative care and the way to relieve pain and suffering is medical marijuana then that's something I'm open to because there's no difference between that and morphine when it comes to just giving people relief from pain,” Obama said. “But I want to do it under strict guidelines. I want it prescribed in the same way that other painkillers or palliative drugs are prescribed.”
Obama open to limited legalization - First Read - msnbc.com
The above is a direct quote from Obama regarding his position on medical marijuana.