That was quick

President Donald Trump on Friday lost his appeal to stop a House subpoena of his tax documents from his longtime accountant Mazars USA.

In a 2-1 ruling, the US Court of Appeals for the District of Columbia Circuit upheld a lower court ruling saying the firm must turn over eight years of accounting records.

[...]

Trump may appeal to the Supreme Court to stop Mazars, but courts including the Supreme Court previously have refused to curtail Congress' subpoena power.

  CNN

That's why he needed Kavanaugh so badly.

But I think the more immediate thing is that we'd have to wait for the Supreme Court to decide whether to take up the case, and I suspect Chief Roberts would stall that decision until at least after the 2020 election. Just a guess.

...but hey, do what you want...you will anyway.