Michael Phelps Beijing swimming octo-medalist Michael Phelps admitted to using marijuana. He had to serve a three-month suspension imposed by USA Swimming after a British tabloid published a photo of him using a marijuana inhaling device in South Carolina. Had Mr. Phelps been applying for admission to the United States (or attempting to adjust status in the United States), he could have been denied admission for admitting to a controlled substance crime. He could also have been denied admission on…