Henry Sanchez-Milian wasn’t supposed to be stalking the halls of Rockville High School on the morning of March 21. In fact, he wasn’t supposed to be in the country at all. The 18-year-old from Guatemala entered the U.S. illegally last summer, was briefly detained by immigration officials, and was then released. This is what happens to many illegal immigrants and does not amount to much of a disincentive for others who wish to come here.

Sanchez-Milian, living with his father in Montgomery County, Md., enrolled as a freshman at the school. He is now charged with raping a 14-year-old girl there.