As I’ve noted before, the Democratic Party is essentially a coalition of victims; as such, unlike the Republicans, they don’t typically disagree on matters of policy. There are, however, two major exceptions to this, both of which are consistent with the class/identity split. One of them is immigration.
If you’re a class-based politician, like Bernie Sanders, you can’t possibly support anything like open borders, because it will cost you the votes of white workers. If, on the other hand, you’re an identity-based politician, like Kamala Harris, a large part of your appeal is to people who support abolishing ICE and providing better treatment for immigrants.
This is going to be a hugely important issue during the debates. Harris will actually be to the left of Bernie on this point. Who wins? I make no predictions; it’s too early.