New Professional here. I'm Doug, and I'm very sorry to hear of your situation. My goal is to provide you with excellent service today.
Based on the facts that you have provided, no, the bank may not legally call the loan or force a foreclosure merely based on the death of your father.
Present federal law requires that when a property owner dies, if that property remains in a trust for an heir of the deceased and if that heir uses the property as their primary residence, then so long as the mortgage is paid and the taxes and insurance are kept up, that the lender may not seek foreclosure of the property.
So long as you are living in the property and the mortgage is kept up, you will legally be allowed to continue to live in the home and pay the mortgage just as if your father were still living.
Here is a link to the law, known as the Garn-St. Germain Depository Institutions Act of 1982, which allows you to keep the property and the existing mortgage: https://www.law.cornell.edu/uscode/text/12/1701j-3
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