"[Biden] said that there's no way to solve the migrant crisis without addressing the violence, corruption, gangs, political instability, and destitution in Central America. Then, astonishingly enough, he claimed to have alleviated all these problems as vice president until Trump came along and ripped it all up.
It's not clear what Biden is even referring to, but if what he said were remotely true, there never would have been a migrant crisis under Trump in 2019 because conditions in Central America would have been too favorable for people to leave.
...It's completely obvious that what has driven the crisis at the border are expectations that Biden would be more welcoming than Trump and the exemption that Biden created for minors in Title 42, used to turn around migrants during the pandemic.
Biden has also ended Remain in Mexico, the successful program to get migrants to wait in Mexico while their asylum claims are adjudicated in the U.S. (if they are allowed in the U.S. during this process, they will never leave, even if their claims ultimately fail)."