Immigrants hope DNA will guide them to lost loved ones

WASHINGTON — The relatives carried photographs, identification cards, anything that might help find the missing. Inside a red-brick church in the nation’s capital, in a small room near a sparkling Christmas tree, they opened their mouths so workers could scrape a sample of their DNA.
Three brothers, in black jackets and matching jeans, sought the fate of a sister who vanished in the Arizona desert two years ago. Housecleaner Olga Gonzalez, of Maryland, was searching for her daughter, Mirna, 31 years old when she disappeared in 2013.