The decision on whether to nationalize a big bank is not about political support, it is about effective power, because although politicians can theoretically do many things that the law allows them, in practice what happens is something else. Let's not forget that in a world where people worship money as a god, power does not reside in the hands of whoever holds a government office or position, but who has control over the money supply. Ms. Tlaib wouldn't have gotten there without the people who finance her, and so she like everyone else. All politicians are bought and have owners. You would make a mistake in assuming that the great financial powers would simply stand idly by while politicians take away their power, particularly considering that they have not kept their hands off politics for the past few centuries.

That said, it is not necessary for the state, specifically, to control the banks for us to live in socialism. It is only necessary that the people who control the state, and the people who control the banks, are the same, thus forming a state that has the de facto power of the economy. We already live in that, because it is not the politicians who nationalized the banks, but the bankers who bought the state.