First of a two-part look at border life. Last year, Elmer—whose last name is withheld because he fears deportation—traveled alone by foot, truck, and bus from Colombia to the Mexico-Texas ...

During the test, a dye is injected through an intravenous (IV) line in the hand or arm, and computed tomography (CT), a combination of X-rays and computer technology, is used to produce images from ...