Green card quotas are based entirely on your country of birth.

For example, a UK citizen can obtain a green card far, far faster than an Indian citizen. If a UK citizen and Indian citizen on an H1B visa start the Green Card process at the same time, the UK citizen will obtain permanent residency typically in 9-18 months. For the Indian applicant, who applied on same day with same visa and process, it will likely be over 10 years before they have security of permanent residence.

Where you were born is built into the foundations of how the USA allocates Green Cards to many visa holders, regardless of who you are, how much you contribute to the USA or earn etc etc.

There are attempts to fix this too:

> https://www.fwd.us/news/per-country-cap-reform-priority-bill...