Migrants Relieved Over U.S. Policy Shift After Long Journeys to Border

Most Central Americans and Mexicans seeking asylum and new lives were worried but not deterred by the threat of separation from their children by Trump administration policy

REYNOSA, Mexico—Patricia de Jesús Flores journeyed 1,500 miles from El Salvador through Guatemala and Mexico to this town just across the Rio Grande from McAllen, Texas, with her 7-year-old son.

She was headed to Los Angeles and said she wanted to seek asylum and enter the U.S. legally. But, if denied, she said she was prepared to sneak in even at the risk of losing Joan.

“The...