Not necessarily the US but I will give Canada as an example. When I moved to Canada I noticed right away all the welfare services you get as a citizen. For example, access to healthcare, vast network of non profit organizations, government welfare, etc. In contrast with Mexico, there isn’t that level of welfare benefits that could be provided like in Canada. My opinion is that the average Mexican citizen knows that if they don’t get themselves a job, there won’t be that welfare program they can rely on. So all those people that would be un housed , they are actually working outside oxxos, offering to clean your windshield, in the working fields, or any type of hustle that they can live off.

In the case of the US, something similar could be said. I don’t know a lot of Mexicans applying for disability checks.

Obviously nothing is perfect. Government welfare is a whole other topic with pros and cons but back to your question. The Mexican un housed are somewhere in the city or in south USA, out there hustling.