(a) A foreign corporation may not conduct a trust business in this state. A foreign corporation may control a state trust company in this state if the state trust company is formed or acquired and operated as provided by this subtitle and applicable rules.
(b) A foreign corporation or other entity chartered or domiciled in another jurisdiction as a trust company or depository institution with trust powers may act as a trustee in this state only as provided by Subchapter A, Chapter 505, Estates Code.