Migrant caravans swell to 12,000, get some help along the way

In the small town of Veracruz, Mexico, at a gas station and truck stop, two nuns began stopping big rigs Sunday to fill the trailers with waiting migrants from the caravan. The caravan is trying to make 116 miles, a record for them, considering the first day walking in Mexico they traveled just 20 miles. -- More...