-Mexico border with the most mini-caravans crossing are the Rio Grande Valley; El Paso Sector, which includes all of New Mexico; and Tuscon region of Arizona. . ... [Read more: Some 700 Cuban migrants join Central American caravan traveling on foot to US-Mexico border] . ..…

“Climate change has ravaged the American Southwest,” said Rep. Greg Stanton, an Arizona Democrat and former mayor of Phoenix. . ..…