RIO DE JANEIRO, BRAZIL - Feeling invisible is what Mexican neurosurgeon Alfredo Quiñones-Hinojosa, known as Doctor Q., who jumped the border wall in 1987 and now inspires a Brad Pitt film that portrays his life and his efforts to find a cure for brain cancer, best recalls about being undocumented in the U.S.
"I think I'm starting to use my voice to give a face to those who feel this way," says the chairman of Neurological Surgery at the Mayo Clinic in Jacksonville, Florida, in an interview.
"Being invisible is a difficult thing, really, I think about . . .