I know Austin is a sanctuary city, and it makes me very sad. However, when I was born here (actually in Smithville--about 30 or so miles away)--the town had a large population of Mexicans--and that was many years ago. It didn't used to be a problem........
Today, I try to avoid going into Austin if at all possible--and I try not to spend any more money than I have to there. T hat's not easy to avoid as it's hard to know where Lakeway stops and Oak Hill or some other little suburb starts, and then you're in Austin and don't know it---LOL!
I grew up near Giddings and we never had any problem with the Mexicans. Most if not all assimilated and learned English before they started school. We had two Hispanic girls (one in my class) from the same family that were valedictorians.
We spend most of our money in Cedar Park and Leander. Gas is usually $.10 - .15 cheaper in those cities than Austin. I hate Austin traffic anyway, but have to deal with it four days a week.