McALLEN — The new 25th Congressional District has been described as the "bacon-strip" district. But some who live at the southernmost tip tend to see it as a "fajita strip." And that pretty much sums up the district’s cultural diversity. In the northern part, which stretches to Austin, the demographics show a predominantly Anglo population with a higher income average and higher education levels. But travel south in the district about 350 miles and you’ll find a mainly Mexican-American population still struggling to overcome language barriers, low employment rates and one of the lowest per capita income rates in the...