2.76 border crossings in 2022 . I know there might be dups in this number but there are also crossings that are unaccounted for. There are also 1 million visa overstays/yr. This is on top of 1 million legal immigrants.
Rough math is 3 million just for refugees ( ppl who cross the border apply for refugee status). All this not event accounting for hundreds thousands of work visas, millions of ppl living in usa in legal immigration queues, birthright tourism ect ect.
But I think no one really has any idea what the actual number is.