The UK is hard to emigrate to. There are better options than the UK, especially now that they left the EU. But, the Americans who go to the UK and eventually do

The UK is hard to emigrate to. There are better options than the UK, especially now that they left the EU. But, the Americans who go to the UK and eventually do become UK citizens often do over healthcare. While being an American expat is not as common due to worldwide liability on taxes, many of those who emigrate to developed countries and eventually become citizens do so for guaranteed access to healthcare and other benefits of a social welfare state that the US does not have. The problem with Canada/Australia/New Zealand, where many Americans go, as we are more culturally aligned with them compared to other developed countries, is that they have medical inadmissability clauses in their immigration laws. You generally have to be pretty healthy to get a even get an approved work visa there, and stay relatively healthy to become a citizen. So, you really cannot effectively emigrate for healthcare to these countries. This is why you do not hear about Americans emigrating over healthcare as much.