Plenty of immigrants complain about the US, just not publically, because they are told - with some right - "Well, then go back home." Which many do, or somewhere else.

What is more telling is that over the last 40 years the net influx of people immigrating to the US from Mexico has dropped to zero. The US used to be a great place to move to. After 40 years of neoliberalism...not so much.

The only people who still are at a net positive moving to the US are those at the very top (the US is #1 or #2 as a tax haven for the wealthy) and those at the very bottom, people who are running from massive violence in Latin America caused by our destruction of their countries economies.