EXCLUSIVE-U.S. to begin returning asylum seekers to Mexico on Friday -official

The United States will return the first group of migrants seeking asylum in the United States to the Mexican border city of Tijuana on Friday, a spokesman for Mexico's president said on Thursday.

In a major policy change, U.S. President Donald Trump's administration said on Dec. 20 it would send non-Mexican migrants who cross the U.S. southern border back to wait in Mexico while their U.S. asylum requests are processed. (Reporting by Frank Jack Daniel; writing by Anthony Esposito; editing by Daina Beth Solomon and Jonathan Oatis)