A Congressional Bank would allow the President to sign a Bill into law, write a Presidential check for the amount to fund the bill from an official Presidential Registry, place the check number on the signed Bill and deposit that check into the Congressional Bank for funding so that there is accountability in GOV. The CB would hold all Accounts for Laws passed to provide Budgets for GOV services.
House Financial Instruments and the FDIC to insure the validity and life of Insured Holdings, I.e. 401K's, Life Insurance, Property Insurance, Health Insurance and others.
Future needs to refund a Bill will provide greater accessibility to direct funding and help to determine how necessary, useful or successful the Service provided is over time.