There isn't a state savings bank requirement in Texas, but we do an annual audit for the Trust department anyway. The FDIC does an annual examination of Trust and Registered Transfer Agent powers, so if you have done an internal audit when they come, there is a good chance they will rely on the internal audit and spend less time with you. The Trust department wants it this way as well, since they have some confidence they will have a good exam if they have a good internal audit.
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Societies that do not find work in and of itself "pleasing to God and requisite to Man," tend to be highly corrupt.