As for poverty in the US, 1 in 8 are in poverty if you use the CIA-polished statistics. I say CIA-polished because the CIA also says the US spends 12.5% of its GDP on healthcare. According to the OECD, it is more like 15.3%. By comparison, France (top healthcare in the world according to the WHO) spends around 9.5% or so. Canada, number 6 in the world, spends something similar, around 9.7%. The UK, which is somewhere around 20th on the WHO rankings, spends 6.25%. For its 12.5%/15.3%, the US ranks 33rd - just above Cuba.
As for saving up for children's college, university educations are an increasingly well-known bubble in the US. It is not uncommon to have 70 or even many more students packed into a single auditorium for lectures. Even in advanced degrees, there is not as much small group or singular education as there is in Europe. But the costs are nevertheless huge. If I recall correctly, American University in DC currently tops the charts with tuition at $50k per year. That is tuition ONLY. It does not include, books, dorm, clothes, etc. A four-year degree thus has a base cost of $200k. It is nothing anymore for universities to charge $25-30k per year just for tuition. Given that this is the case at a time when many people are losing their houses because they can't make the payments and others can't get on the property ladder because they can't afford the down payment, I would say it is damn hard in the US to pay for things that people in Sweden take for granted.
Just my 2¢. YMMV.