LOL!
I believe that it was called United States Postal Savings Bank initiated in 1910.
Thanks for the reminder. ;-)
I simply cannot recall the Socialists making a big deal out of banks ~ in fact, most of the old Fabians and their running dog lackeys probably thought of bankers as useless eaters.
The Commies thought they could run an economy without money/money. That early experiment by Lenin lasted almost as long as the "no visible rank" Army insignia.