"Denisse Rojas earned a biology degree from UC Berkeley and has set her sights on medical school. But one big obstacle stands in her way.
To practice medicine in California, doctors must obtain a license from the state, and applicants are required to provide a Social Security number as proof of identity.
Rojas, 25, does not have such a number. She is in the United States illegally, having been smuggled into the country from Mexico by her parents when she was 6 months old."