in Teapot Dome, Congress had actual evidence that a crime - bribery - had been committed BEFORE they went looking for evidence. In other words, they had that little thing called "probable cause". In THIS case, Congress is demanding the records in order to (hopefully) FIND probable cause in the first place. Very different scenario.
You learned your "law" from the back of your cereal box; proving that you are a ******* idiot.
"Probable cause" CLEARLY rests in the fact that Trump has NOT divest himself from the hotel in DC where he is breaching the emolument clause.
"Probable cause" is also part of the congressional functions to OVERSEE the executive branch as part of Article I.
Finally, congress has every right to demand from the IRS is the orange piece of lard has told the truth that his tax returns are STILL "under audit" for each of the years that the tax returns were requested.