An "admittance" is someone with a H-1B visa appearing a port of entry like an airport to enter the US. If a single H-1B holder goes on (say) 3 international trips in 1 year, that will count as 3 "admittances" in that year.

The reason why the number is so low in 2021 is that the US government had a COVID non-immigrant travel ban. People with H-1B visas couldn't re-enter the US from many countries e.g. most countries in Europe. Many people in H-1B status (like myself) simply didn't take international trips that year.

2020: 427,200 2021: 398,300 2022: 474,300 2023: 386,600

[1] https://www.uscis.gov/sites/default/files/document/reports/f...

(Although, even these statistics are not as simple as they seem! E.g., when an H-1B status holder changes employer this counts as a new receipt even though the number of H-1B workers hasn't changed. In periods of time when there is lots of churn in the labor market, like in 2022, you would see higher receipt numbers just from the churn. It's complicated!)

"Admittance rates" measure how many H1B people travel internationally and then return to the USA. Unsurprisingly, in 2023, more people traveled internationally than in 2021, when almost all countries closed their borders.

Any offspring also doesn't qualify for citizenship.

Literally anti-constitutional.

I don't think Trump give a crap about helping American workers, anymore than his buddy Elon does - the anti-immigrant thing was just that.