Comment by ahussain
I have lots of examples:
* By law, the US can only issue 140,000 employment-based green cards per year, and no more than 7% to one country. This means people from India or China can face a 100+ year backlog, even after they have proved they qualify for a green card. There's no cap on marriage-based green cards.
* Processing times for many green cards (i.e. for people who have already qualified, but just need the physical green card), are 12-24 months.
* USCIS still expects many applications to be sent by mail. Some applications (like O-1s, EB-1s) require hundreds of pages of evidence, and it all needs to be printed out on 8.5x11" paper, for USCIS to scan it in on B+W scanners. This means that there is no error checking (e.g. on fee amounts), and if you have made a mistake, you might not know about it for weeks. Also, it means your petition cannot include working hyperlinks, webpages, or videos - the USCIS officer judges the petition by scrolling through a 400+ page PDF.
* The 'standard' post-graduate work visa is the H-1B. It's entirely lottery-based, not merit-based, and typically there are 400,000+ people competing for 85,000 visas. Many qualified people are forced to leave the US each year because they didn't get selected in the lottery.
Hyperlinks are often banned in various kinds of petitions and applications. Mostly to ensure that the entire application is submitted at once and does not change afterwards. Then you can process the application in multiple passes (maybe first for the formal requirements and then for the actual content), confident that the conclusions from the earlier passes are still valid.