Some things I've seen in Arizona:
Illegals come in, steal or forge a social security card (identity theft), work for less than minimum wage effectively killing job markets great for high school students and low-skilled people, or anyone willing to take a job right now, drive without insurance, have zero liability if they kill you or a family member while driving without insurance, bring drugs both ways across the border, and overall just make the place a total shithole with zero regard for the law or anyone else.
Yet, with the current administration, no one is going to do anything about it and would rather continue to let them stay here destroying our country from the inside.
If I went down to Mexico, which I have many times, I would be thrown right into prison if I attempted any of this. Yes, you can pay off cops relatively easily down there, it usually takes less than $50, but if you do end up in their prison, you're going to rot. And honestly, why shouldn't you? No other country in the world would treat you any differently for coming there illegally and being a total asshat with no regard for them or their laws.