IIRC, the US-Mexico border was never open, but it was quite porous. People would come to the US, work for a season to make some money, then go home.
Then once border security started to be tightened, leaving was too risky so people would stay leading to a huge increase in the number of undocumented people living in the US.
- Brad Lander (NY-10, defeated incumbent Dan Goldman): Longtime advocate for abolishing ICE. He has been arrested while intervening at immigration courts to protect immigrants and ensure due process. "I first called for abolishing ICE in 2018... Our movement is fighting to abolish ICE." (Social media/campaign statements). Vowed to fight ICE's "cruelty" and protect "immigrant neighbors." He emphasizes sanctuary city enforcement and due process for all.
- Darializa Avila Chevalier (NY-13, defeated incumbent Adriano Espaillat): DSA member, strong abolitionist stance. Supports abolishing ICE, opposes all forms of deportation and detention. "I have yet to come up with a reason for why deportation has been used in a way that isn't rooted in deeply racist ideology." (June 2026 interview). Called free movement an "ideal vision" (noting capital moves freely but people are restricted). She also opposes policing and borders in broader terms.
- Claire Valdez (NY-7): DSA-backed progressive who won her primary. Part of the Mamdani slate emphasizing immigrant justice; aligned with the group's platform calling to demilitarize borders, end detention/deportations, and expand rights/services for all immigrants regardless of status
Look at the huge jump due to his policies: https://www.economist.com/content-assets/images/20240127_EPC...
The same was not true for Obama, who was actually much better than Bush.
- https://www.cato.org/blog/biden-didnt-cause-border-crisis-pa...
- https://www.cato.org/blog/biden-didnt-cause-border-crisis-pa...
- https://www.cato.org/blog/biden-didnt-cause-border-crisis-pa...
(Also, FWIW, those immigration surges were good things (for the US), and likely helped the US stick the "soft landing" instead of slipping into a post-covid recession)