Psssst - even if the president made marijuana legal - which he can't - state laws would keep it illegal for many. See: 21st amendment. A president who is against marijuana? I'm not worried about him keeping it illegal. He can't. What he can do is order federal agencies to prosecute pot smokers under federal law, which Obama hasn't done as far as states who legalize pot are concerned.When the President of the United States has done something to make marijuana legal in this country, let me know. Until then, Dr. Ben Carson's opinion on the matter isn't relevant. If you want to not vote for Carson because of his opinion on the legalization of marijuana, that's fine, I'm sure. I personally don't care either way. Mkay?