Masons even keep secrets from family. How much could you trust one?
How could a Mason be trusted in a position of governance? It would be much the same problem as with a dual citizen.
"not to let your Family, Friends, and Neighbors know the Concerns of the Lodge, &c"
"You shall be cautious in your Words and Carriage, that the most penetrating Stranger shall not be able to discover or find out what is not proper to be intimated "
Free Mason Constitution
https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1028&context=libraryscience