Create a better, not-corruptable, not-profit oriented banking system

The banking system is too big to fail? Bankers repeatedly allowed to corrupt politics, crash global financial systems, siphon money collected through a process of creation and evaporation of "bubbles" induced by single organizations having enough money to sway global markets, into untaxable bank accounts in safe havens? I say no. Create a taxpayer funded federal same-as-cash banking system where our money goes into a protected account, is not shipped around to be lent to other people and is NOT invested. such a system would require billions of dollars to set up atms across the country, to have a plastic card service and govt reps on standby for customer service...etc. Such a system could have been paid for 800x over by bailouts, and would not have to be bailed out. ever.