In terms of your first $100k insured in US bank via FDIC (above that you have to have personal insurance which is very expensive), it might take even 15 years to recover your funds, depending on complexity of claims and number of different instruments that bank has offered to its clients.
For example, there are still open and active claims in case of NextBank that has been shut down in 2002, and had some updates on status done in early 2015, some 13 years later [1]
Personally I suggest keeping 70% of your financial assets in cash in safe at home, preferably split into 20% in low-volume silver coins (80% silver) and 20% in foreign currency (EUR) and the rest in USD.
For example, there are still open and active claims in case of NextBank that has been shut down in 2002, and had some updates on status done in early 2015, some 13 years later [1]
Personally I suggest keeping 70% of your financial assets in cash in safe at home, preferably split into 20% in low-volume silver coins (80% silver) and 20% in foreign currency (EUR) and the rest in USD.
[1] https://www.fdic.gov/bank/individual/failed/banklist.html