Trump is using laws on the books that he claims delegate authority to the executive branch to levy tariffs under certain conditions, which he claims exist.

To end that, those laws would have to be repealed, and for that to happen they would have to override his veto.

They could impeach him for misusing his authority to levy tariffs, but otherwise, it is up to the courts to block him.

the Supreme Court just ruled that Krasnov's use of that law on the book was illegal.

We don't need Congress to do anything except to do its job as prescribed in the Constitution.

If I can get a clear understanding of the ruling from Canadian media, you should be able to also.

SCOTUS ruled that IEEPA didn’t permit a president to levy tariffs under any conditions, despite the fake fentanyl “emergency” Trump claimed.

Now he is invoking other laws with other conditions that will be litigated, but were not covered by yesterday’s ruling - only IEEPA was.

Other than repealing laws giving a president tariff authority or impeachment, I’m not sure what you mean by Congress “doing its job”.