I guess I don't see what there is to celebrate about the SCOTUS ruling today. Did SCOTUS basically limit the ability of Congress to oversee its own taxation powers?
I assume you mean "subpoena powers".
It resoundingly rejected the argument that the President is untouchable while in office (worth celebrating from purely a rule-of-law perspective), but then in both of Trump's cases remanded the issue back down the the lower courts for further consideration. Which will give Trump
plenty of opportunity to stall until the election is over. It was a punt until after the election. SCOTUS doesn't want to look like it's playing favorites apparently (well, 7/9 anyway). Also the fact that
both of Trump's appointees voted against him is hopeful from a rule-of-law perspective.
So while it's perhaps not worth "celebrating", it's also not nearly as bad as it could have gone.