Hundreds of asylum seekers who have been blocked from entering the United States under Trump’s “Remain in Mexico” policy shut down the busy international bridge between Matamoros, Mexico, and Brownsville, Texas, for 15 hours Thursday. The hundreds of migrants, including families with children, were protesting the dangerous and filthy conditions in which they’re forced to live as they await their asylum hearings in the United States. Late Thursday afternoon, Customs and Border Protection officers fired smoke bombs at the protesters.