High-profile Hillary Clinton supporter Bob Johnson is apologizing to Barack Obama for comments he made last week regarding the Illinois senator's acknowledged drug use as a teenager. Johnson said he sent a letter to Obama Thursday morning and said he was also reaching out by phone. ---- Obama spokesman Bill Burton told CNN that "Obama accepts the apology. We're going to leave it at that." http://politicalticker.blogs.cnn.com/2008/01/17/clinton-supporter-apologizes-for-obama-comments/