Yeah the most honest thing someone can say about immigration policy polling is that it is incredibly mixed and highly contingent on the particulars.
People want to enforce the border. But want a pathway to citizenship for the resident undocumented.
They want to mass deport undocumented criminals and recent arrivals, but don't want to deport most undocumented.
They pretty much have no idea of the actual realities of any of the above. Which is why they can both elect Trump and recoil at his immigration policy.
I love how a third of people want to erase a constitutional amendment 🫠.