I think they just gave to OK to accept Mexican issued ID for driving license. Strangely I had to produce Birth certificate old driving license and passport along with a current electric bill with the address. They then ask if you want to register to vote, which is all by mail. I wrote in Sarah Pali for President, and my name on all the other offices sense I didn’t know any of them.
It has been that way but they were supposed to prove legal residence (not sure how). Meanwhile, the burden for non-Mexicans is much higher.
Oregon's "outreach" to recruit Mexicans into the health care, foodstamp, and welfare rolls is second to none.