> The US is one of the easiest countries to immigrate to and we only have 14.4% of our population having changes countries
Just to follow this tangent briefly - I'd be surprised if that first statement is true by most definitions (I'd almost say the opposite), and the implication that 14.4% of the population is therefore a high level certainly isn't.
https://en.wikipedia.org/wiki/List_of_sovereign_states_and_d... has some detailed numbers. In short, although the US has the most immigrants in the world in total, many major nations have double or much higher percentages of foreign-born residents compared to the US. E.g. Singapore (43%), Switzerland (29%), Australia (33%), and that's ignoring the tiny countries with 50+%, or the middle eastern states with large migrant worker/refugee populations, like UAE at 84%, Qatar at 74%, Jordan at 40%, etc etc.
I don't really disagree with your main point - changing countries isn't _that_ hard as a US software developer, but changing jobs is certainly easier - but I keep seeing the US portrayed like this, and it's not really true.