I'm not sure what you mean by that. The info from the forms that we get from our investments go into specific irs forms. We take standard deduction since we don't have enough things to itemize and get more (we have looked into it). I'm sure for people who have their own business or donate loads, it is very different from our situation. But I would be grateful to you if you're able to tell me how to get more money back from the irs when you have investment accounts with fidelity or vanguard and employer sponsored retirement accounts that adjust at the source.

Not true. My husband and I have all of the above. Plus there's been years when we've had multiple jobs in different states. Last year we even had the solar panel credit. Plus our hsa is on the side (not directly out of our paycheck at the source) and we also have a dependent care fsa. We've been doing our taxes by hand every year for 5 years now. It requires a little more thinking and rechecking the work but fairly straightforward. We've never had an issue with our return.

Yes, that includes the green card process. After my 3 years were over, it took me 1 month because I applied 3 months before my 3 year period was over from getting the green card, and it took only 4 months to naturalization from application. It took a year to get the green card.

I'm one of those immigrants that became a US citizen in the past year. It took me 4 years from when I applied for mine. And I was a spousal immigrant, which is the fastest category. It takes most people years longer.