AOC is a freshman Congresswoman with little power.
de Blasio is a mayor with zero control or impact on border policy.
As for Warren -
https://www.washingtonpost.com/graph...=.01bdf8eb9da5
Not in favor of abolishing ICE wholesale, but rather restructuring it and/or redistributing duties.
She does support not penalizing illegal immigrants for crossing alone, but that's a part of her views on the need for comprehensive immigration reform. She still supports deporting those engaged in other criminal activities though.
She supports immigration detention, but with limits. She doesn't support longterm detention, the detention of families/pregnant women, and wants stronger oversight of government and private facilities to make sure they're not abusing people as we repeatedly see today.
She also supports more funding for border security, which seems to contradict the "open borders" nonsense.