Tanakhic Judaism, Christianity and Islam forbid unjust, exploitative gains made in trade or business.
While banking must certainly incur some expense, processing fees and transaction fees, and storage fees, etc. Compound interest, fractional reserve lending (creating money out of debt) and unchartered banking are a SWIFT Road to ruination and disaster for any nation.
Everyone knows that the US has a massive national debt which exceeds gross domestic product. Few stop to consider how the debt was incurred, and to whom it is owed.
Ban Usury.