When Dayana Castro heard that the U.S. asylum appointment she waited over a year for was canceled in an instant, she had no doubt: She was heading north any way she could. The 25-year-old migrant, her husband and their 4- and 7-year-old children had nothing left at home in Venezuela.

Migrants waiting to enter the United States via its southern border are in distress following U.S. President Donald Trump's sweeping decision to suspend asylum claims after returning to the White House.