U.S. Border Patrol agents found four bodies near the Rio Grande river along Anzalduas Park, close to McAllen, Texas. In this file photo, a Border Patrol boat is seen on the river along Anzalduas Park.

U.S. Border Patrol agents found four bodies near the Rio Grande river along Anzalduas Park, close to McAllen, Texas. In this file photo, a Border Patrol boat is seen on the river along Anzalduas Park.