You may not at first think of the U.S. Southwest as an incubator for literary innovation until you realize that its artists  know that borders are artificial  and arbitrary and they can’t resist crossing them. And it is obvious El Paso, Texas, has become a key stop on the journey with the likes of literary stars Cormac McCarthy, Dagoberto Gilb,  Raymond Carver, Pat Mora and José Antonio Burciaga passing through. Now author Benjamin Alire...