Just to be clear, the Somalis aren't here because of anything Joe Biden, Tim Walz or Barack Obama did. They started coming over as refugees from the civil war that started in the early 90s that led to displacement, destruction of infrastructure and severe famine. The United States began granting visas to offer a path to safety from the violence and humanitarian crisis with the peak arriving during the 2nd GW Bush presidency. The majority were born here and most of the others are naturalized citizens so they can't be sent back any more than you or I could.
Hence, Biden's border policy had nothing to do with it and as far as America First goes, the majority have known no other country but America, which makes them Americans First.
You can be rightly outraged about the fraud being committed but what you can't do is ship them all back because it makes you mad.