. >> host: unc professor jacqueline maria hagen. what's this picture on the coffer of your new -- cover of your newest book, "migration miracle." >> guest: it's a cross. and it's a cross on top of a mountain, and the mountain is situated along the u.s./mexico border. and it's symbolic of the many migrants who have died in their attempts to cross the border into the united states, doing so without papers, without authorization. and as we though from, as you may know and the media's told us, the numbers of fatalities, of migrant fatalities are increasing, and i think this year there are 400 depths incurred to central americans and mexicans crossing into the united states. so that cross symbolizes their crossing experience, and the title of the book, "migration miracle," is basically taken from the words of the migrants who often described their successful journey as a miracle. >> host: how did those 400 die? what were the causes? >> guest: the causes range from being killed by a smuggler to suffocating in the back of a car to asphyxia