First binational operation and the largest of its kind, said city official.
Opinions on background checks, Rubio's Senate gambit, states-rights bill.
US, Mexico work together on wildfires, floods and spills.
Reader ideas on Christmas as a national holiday, Sonoran Corridor, budget surplus.
The group (formerly TREO) will open sales offices in Mexico City and Hermosillo.
Stretch of road is part of larger picture for region's economic future.
The remains of a colonial-era church submerged decades ago in a southern Mexico reservoir have reappeared are among the week's top photos.
The man and two teen girls were apprehended in separate border incidents this month.
The exhibit includes 13 internationally known Mexican artists.
Southern Arizona Authors' September reviews.
Events held by Visit Tucson offer advice on tapping into robust market.
Olympic water venues with dangerously high levels of viruses and bacteria from human sewage, celebrations, festivities, protests and houses make a mural.
A weed is a plant out of place or a plant whose economic potential has yet to be realized.
Readers respond to Ford tariff letter, unfair traffic cameras, Trump "hero" comments.
Letters on teacher evaluations, red lights, Marine shooting, Ford production in Mexico.
Letters on 'El Chapo' escape, Huckelberry's salary, Texas Whataburgers, school librarians.
The U.S. currency was found in 306 bundles wrapped in black tape.
Incredible Guadalajara-style birria beef from a little taco truck on Irvington.
Readers react to Charleston shootings, charter school budget cuts, war on drugs.