It is not a conspiracy theory. Biden says it directly and did so on CSPAN: https://www.youtube.com/watch?v=ak3IxD0sDuE
Biden in 2015: We need an "Unrelenting stream of immigration, non stop, non stop" (video)
Biden in 2015: We need an "Unrelenting stream…
Biden in 2015: We need an "Unrelenting stream of immigration, non stop, non stop" (video)
It is not a conspiracy theory. Biden says it directly and did so on CSPAN: https://www.youtube.com/watch?v=ak3IxD0sDuE