I never knew this! Would you mind elaborating how immigrating to the US is easier compared to other countries?
Sure, so the US system is primarily based on family ties. Majority of documented immigration to the US occurs this way, and essentially consists of a family member sponsoring the arrival of new immigrants. Other countries rely more heavily upon skill-based and employment based methods of immigration. Canada, most Western European countries, Japan and South Korea, etc. It is also somewhat easier to attain permanent citizenship or residency in the US than it is in quite a few developed nations (in some nations this is almost impossible except under very specific circumstances).
The one massive caveat to all this is that the EU allows for free movement between the various member states, so the easiest immigration in the world is actually between European countries that are part of the EU. However, that only applies to those countries, and this thread was made by someone outside of that free movement policy so it's not applicable here.
One other thing to note is that US immigration based on humanitarian aid is paltry relative to the size of the country, and many other developed countries accept far more immigrants this way relative to their size than the US does (Germany and Canada are good examples of this).
Another thing to note about US immigration is that we have pretty expansive birthright citizenship, which ties directly into the family ties nature of the US immigration system. Birthright citizenship is largely a North and South American phenomenon, very few countries outside of this portion of the globe have this policy.
Developed Asian nations in particular (such as South Korea and Japan) have incredibly strict and conservative immigration and citizenship policy.
