The U.S. government created a secret database of activists, journalists, and social media influencers tied to the migrant caravan and in some cases, placed alerts on their passports. At the end of 2018, roughly 5,000 immigrants from Central America made their way north through Mexico to the United States southern border. As the migrant caravan reached the San Ysidro Port of Entry in south San Diego County, so did journalists, attorneys, and advocates who were there to work and witness the events unfolding. But in the months that followed, journalists who covered the caravan, as well as those who offered assistance to caravan members, said they felt they had become targets of intense inspections and scrutiny by border officials. Documents leaked to NBC 7 Investigates show [that the] government had listed their names in a secret database of targets, where agents collected information on them. Some had alerts placed on their passports, keeping at least two photojournalists and an attorney from entering Mexico to work. The documents were provided to NBC 7 by a Homeland Security source on the condition of anonymity. The individuals listed include ten journalists, seven of whom are U.S. citizens, a U.S. attorney, and 48 people from the U.S. and other countries, labeled as organizers, instigators or their roles unknown." In addition to flagging the individuals for secondary screenings, the Homeland Security source told NBC 7 that the agents also created dossiers on each person listed.