You are being non-productively silly, Mr Mick. I lived through the events and paid attention.
The game you are playing is, actually, common. It is to assert that what actually happened, what was seen by one’s own eyes, what occurred around one (mass influx), and what one is actually living, is not real.
These are bizarre perception-manipulation games. And if that is a field you choose to work in, have at it.
you have no grounds for claiming it was welcomed and encouraged by Biden’s administration
It was certainly encouraged, but as a phenomenon it was also connected to, or powered by, a rather massive choice to disregard established laws and certainly mores, which resulted in presenting to the world a view that the border was open. And millions received the message and responded. Who specifically did this? Many interests were involved,
and an administration.
Do you see, Mick? what nuanced and reasonable thinking brings to us? A realistic and fair picture. Neutral as Brother Fanman uses the term.
Was this ultimately to the advantage of either the Democrats or the less defined population adamantly opposed to Rightwing nationalism that disfavors demographic transformation? I think in the long run yes, but in the shirt run the reality of their complicity, as well as the appearance of it, has worked against them.