With food and stuff, the thing is that in the US, you can very quickly go from having not much to having nothing. Many people do suffer from hunger and live on the edge because the cost of living in the United States relative to incomes can be very high. It's much more difficult to set up a small stall selling goods or food or something, and if you don't have proper permitting the police will shut you down. Therefore, once you get to a certain point you are really trapped. There's much less of an informal economy in the US than in Latin America, so people's ability to earn money is much more restricted and regulated.
The correlate to the people you are describing in the United States are referred to as the 'homeless.' They live in small structures made of cardboard and wood and tarps. Some have tents. The police will occasionally come by and throw all of their possessions in a garbage truck. Homelessness is pretty widespread, and the degree to which it exists here is often shocking to people from other countries.
Here's a photo essay that gives you some idea of what is going on in the United States in terms of the homeless. These living conditions are pretty darn comparable to international poverty. I assure you none of these people have stocks.
https://www.latimes.com/california/story/2021-03-08/homeless...
Obviously the scale of the whole thing is different between the US and Latin America, but there's lots of pretty shocking poverty in the US.