(a) No national bank shall be subject to any visitorial powers
except as authorized by Federal law, vested in the courts of
justice or such as shall be, or have been exercised or directed by
Congress or by either House thereof or by any committee of Congress
or of either House duly authorized.
(b) Notwithstanding subsection (a) of this section, lawfully
authorized State auditors and examiners may, at reasonable times
and upon reasonable notice to a bank, review its records solely to
ensure compliance with applicable State unclaimed property or
escheat laws upon reasonable cause to believe that the bank has
failed to comply with such laws.