I didn't really think much of Trump's EO about debanking. NIc Carter has a nice reaction to it on his Substack.
This paper presents a fairly comprehensive case for the need for changes to debanking:
This Article identifies two features of the banking regulatory system that allow the debanking debate. First, bank regulators have discretionary supervisory power to engage in debanking. Under the guise of reputation risk, anti-money laundering laws, or general concern about uncooperative bank management, bank regulators have the power to influence bank decisions for political reasons. Second, bank regulators’ supervisory actions are largely secret. This means that those alleging governmental debanking rarely have receipts. But it also means that those who deny debanking lack proof.
Here's a link to the abstract in case the pdf link above doesn't work.