How much taxpayer money will be spent compiling taxes for all working adults in the U.S.? I'm guessing this is more work than it's worth. I don't think filling out a simple form once a year is that much to ask, even if it takes as long as a few hours to do.
Edit: Not sure why I have negative points here, I was just saying that the process of implementing a system to actually get people their taxes and accommodating all the edge cases and ensuring everything is perfect enough that people literally don't have to do anything is probably not worth it compared to doing a check of submissions against the IRS own findings. Feel free to tell me why I'm wrong, I'm all ears and not super knowledgeable on the system (obviously)
EDIT2: Also, not implying that it can't be done, just that it's not worth it to the IRS to do something like that. Seems like otherwise it already would have been done?