There may be a few less Mexicans going there for vacation but I think a lot of people would be surprised on how little impact it would have there. People are acting like they are going to simply round up anyone with brown skin. I would guess they are more likely to pick a group of Mexican looking people walking down the highway carrying everything they own then they would be to stop a family in car driving down the highway, assuming there not ten people in car that is.

The Mexicans who can afford to come to the US for vacation are not the ones who would affected by this and won't be pilled ten deep in the back of pick trucks. From my experience they also wouldn't have much more sympathy for the poor Mexicans crossing the US border then they do for the poor people of South and Central American making the much more dangerous crossing into Mexico.

The harder and more inconvenient you make for people to enter this country illegally the less that will do it. I think the only long term answer is to crack down on people who hire illegals but sending them back when we catch would be a nice start.