This weekend in Los Angeles, fans of the weed are having an event celebrating Obama's first year in office. They photoshopped this advertisement, yet noone asked permission to do so.

A rep for the White House told TMZ there's a longstanding policy "disapproving of the use of the President's name and likeness for commercial purposes" -- but the rep wouldn't say if the potheads were going to face legal action over the ad.

What do you think of the ad? What do you think about medical marijuana? Comment below...