Rocío Ramos looks from a doorway in her home on May 19 in Tijuana. The El Salvadorian family had planned to seek asylum in the United States, but on the day of their CBP One appointment a winter storm washed out the road making it impassable. They now have started a new life in Tijuana. (Ana Ramirez / The San Diego Union-Tribune)

The U.S. has closed its southern border again to livestock imports, saying a flesh-eating parasite has moved further north in Mexico than previously reported. Mexico's president was critical Thursday,

Secretary Rollins takes decisive action and shuts down U.S. Southern border ports to livestock trade due to further northward spread of New World screwworm in Mexico.