the breaking news exclusive by nbc news. a report on the treatment of children by u.s. border agents which includes an allegation of sexual assault. the report first published on nbcnews.com by jacob soboroff and julia ainsley details the findings of some government investigators who have been interviewing children held in arizona. julia ainsley will join us in a moment to discuss her reporting, including the sexual assault of a teenage girl. a 15-year-old girl from honduras described a large bearded officer putting his hands inside her bra, pulling down her underwear and groping her as part of what was meant to be a routine patdown in front of other immigrants and officers. the girl said she felt embarrassed as the officer was speaking in english to other officers and laughing during the entire process. according to a report of her account. a teenage boy accused officers of calling the boys puto,