Yes. One feeds off the other. One needs the other. And of COURSE they bring their own country. Anybody who visited the US Mexican border 30 or 40 years ago, would notice the feeling of leaving an advance nation into a backward nation. Now when you drive down there, it is all equalized, you cannot even tell the difference, it has all become backward, filthy, corrupt, and unsafe. That is approaching more and more north as it moves inward.
Funny you should mention that. My daughter lives fairly close to the border and once when I was down there I drove about 25 miles further south to go to a Walmart.
When I walked into the store I was astounded by dirty and stained carpeting, clothes and clothes hangers all over the floor.
The real surprise came when I went into the 'arts and crafts' section to buy some tubes of fabric paint to decorate T-shirts.
Almost every tube of paint had been opened and there were squiggles of it painted all over the shelves and 'backboard' behind the display!! Amazing!