Waves of migrants — who U.N. officials estimate may be as high as 7,200 and growing — has already trekked through Guatemala and is passing through southern Mexico with people from Nicaragua, El Salvador and Guatemala.

Waves of migrants — who U.N. officials estimate may be as high as 7,200 and growing — has already trekked through Guatemala and is passing through southern Mexico with people from Nicaragua, El Salvador and Guatemala. https://t.co/FU8rO7FRW7 pic.twitter.com/gZ3dGUIEkO

— USA TODAY (@USATODAY) October 23, 2018