Which bank does the U.S. government use?

1st Community Bank 2 AmeriState Bank 5 Bank of Jackson 8 Butte State Bank 1 C3BANK National Association 9 CATHAY Bank 21 Commercial Capital Bank 7 First Nations Bank 2 First Northeast Bank 4 FMS Bank 14 Four States Bank 1 High Plains Bank 4 NATIONAL CO-OP Bank National Association 10 North Star Bank 10 SALLIE MAE Bank 26 Solutions Bank 5 TOWN Bank National Association 4 Union State Bank 10 United Midwest Savings Bank, National Association 5 WEST Bank 30