Mother in migrant caravan makes an emotional appeal to President Trump After using it as an election campaign issue, President Trump is once again focusing on the caravan of Central American migrants heading to the U.S. border. In a series of tweets Friday, the president questioned the motive of migrants who are planning to seek asylum in the U.S. He calls it a big con. Those who make it across the border, face another journey through the American asylum process, which requires them to prove they've fled persecution in their homeland. Adriana Diaz reports.