Can the pastor veto any decisions as church organization president?
We cannot give legal advice, and are not forming an attorney-client relationship with you. The following is not a substitute for the advice of a local attorney. But we hope the information will be useful.
The powers of the President (including any veto power) depend solely on what powers the President is assigned by the founding documents of the church. Those documents may be some sort of constitution, corporate operating agreement or bylaws, etc. The powers of the president will be spelled out there. There is no standard. You have to look at the documents in order to determine what the powers of the president actually are. Good luck.