(a) A state trust institution may act as a fiduciary and engage in a trust business at each trust office as permitted by this chapter and at a branch.
(b) Notwithstanding subsection (a) of this section, a state bank or a state trust company shall not engage at an out-of-state office in any trust business not permitted to be conducted at the out-of-state office by the laws of the host state applicable to trust institutions chartered by the host state.