According to Donald Trump, a group of several thousand Hondurans fleeing violence and poverty who are on foot and 1000 miles from the US border are a threat to US national security and sovereignty. Who is part of the “caravan”? Why have they left Honduras? What are their prospects for reaching the US border? What policy options–other than fear-mongering–does the US have? Doris Meissner, former US Commissioner of Immigration and currently a senior fellow at the Migration Policy Institutes, provides answers.