Do you mean like NYC? Literally the city built on large scale immigration? Also the state of California. Houston, Texas is the most diverse city in the country and you can buy a house for less than the national average. There are hundreds of millions of people in the US who own homes and raise families on entry level jobs, the just don't live in high cost of living areas. That's not to say their lives are all perfect and rosy but its possible. I'm not denying housing affordability is a problem, it absolutely is but narrowing your view of America to SF when it is the most extreme example is a little disingenuous. My hometown has tons of people where 2 parents work slightly above minimum wage jobs and own homes and raise families. It's 2 hours from 2 major cities. You can absolutely have a good life without making a ton of money. Now healthcare... that's a separate issue.
If there are simply not enough jobs in Greece, that means the economic situation isn't great. A highly functioning economy should be produces lots of jobs as businesses grow and expand. I'm not arguing Greece should take more immigrants though, you sound like you don't want them and neither does your country. I would be happy for America to accept all of them, refugee or PhD Scientist, but unfortunately the political situation at the moment doesn't allow for that.
I'm not sure where you're getting your news on America but martial law isn't being declared anywhere. Most of the country is relatively peaceful and people are happy - https://news.gallup.com/poll/351932/americans-life-ratings-r...
If there are simply not enough jobs in Greece, that means the economic situation isn't great. A highly functioning economy should be produces lots of jobs as businesses grow and expand. I'm not arguing Greece should take more immigrants though, you sound like you don't want them and neither does your country. I would be happy for America to accept all of them, refugee or PhD Scientist, but unfortunately the political situation at the moment doesn't allow for that.