there are real actions Biden can take today

Well let's look at the two you just said.

1:elimate via 1965 higher education act. Mechanistically, this would be done via executive order, then the court challenges, and rules on whether or not the action itself or the 1965 act is constitutional. And what do you know! We are in luck! Because that's literally what just fucking happened with the 10k cancellation last year. And it turns out our supreme court is full of shit bags, so it got squashed.

2: stack the court, or, excuse me, "expand to 13". This is blatantly and laughably unconstitutional. The amount of justices is explicitly set Article III, Section 1, by congress. Judiciary Act of 1789 set it to 6. Passed by congress. Judiciary Act of 1801 set it to 5. Congress. 1807 to 7. Congress. 1869 set to 9. Congress. Jackson tried and got overturned. FDR tried, via congressional bill and didn't get the votes. Now tell me where in that timeline do you see the authority to do this without congressional approval? So what you are asking for is a literal goddamn executive coup, a blatant authoritarian power grab for the executive, what we just narrowly avoided with Trump. Any support online you see for this movement, that even dares to cite a legal explanation for why Biden could do this, is made by liars and grifters who thinks they can sneakily interpret the constitution with some backdoor logic to ignore all judicial precedent. They are just rebranding sovereign citizen logic, straight up.

I mean, the SC shut him down on eliminating debt. So they clearly don't believe he has the ability according to that act. It's not like he forgot to invoke a law or something. SC takes all laws into account.

Increasing the SC is a very dangerous move. What's going to happen? Just the SC increases every single time the majority changes and a new party comes into power?

So it's not that simple. It's an extremely naive take.

The endless march of court stacking would breed a not-inconsequential amount of bad precedence, to the degree that even judicial impeachment would produce a more stable final state. Iirc, supreme court stacking has been attempted before and struck down as well.

What the Democrats should have done is put forth a cap on the justice count while Republicans feel like winners. If they stack the court back, we'll just see SCOTUS grow every new administration until it's literally meaningless. The court shouldn't even be political. It is there to check runaway politics.

if he can do that, they could figure something out

Learn how the government works. Please. An executive order was what Biden did previously, in attempting to cancel a smaller amount of debt for less people. It was rejected by the supreme court. There is no next step, there is no other way that isn't an explicitly authoritarian unconstitutional Andrew Jackson style attack on the supreme court. Biden would have an approval rating of 10% within a week, whether or not anyone on Lemmy thinks it's a good idea.

EOs can't supercede the Supreme Court's decisions. If they claim the action is unconstitutional, no EO overrides that. It's simply not how EOs work.

You need to go watch some Schoolhouse Rock

It's just a majority. 222 Republican reps to 212 Democrat.

Supermajority would be 290.

if the supreme court accept it, then it's cancelled

They clearly, obviously, blatantly will not accept it. They shut him down on cancelling a smaller amount. They won't just allow him to cancel a larger amount. All sending it to them does is create more precedent limiting the power of the executive, there is no reason to do that. There's zero upside.