My late father was a Master Mason and a faithful Catholic. I don't know if someone questioned our parish priest about a eucharistic minister wearing a square-and-compass lapel pin, but evidently my father had a discussion with the pastor and the bishop of our archdiocese where they discussed the compatibility of the two organizations. The result? Should any well-meaning yet misinformed parishioner raise the objection again, the parish had a letter on file signed by the archbishop saying his membership in the Lodge in no way should preclude my father from serving in any lay ministry, and the archbishop had no objection to my father wearing his masonic ring while serving at the altar. As my father said, "Being a good Catholic makes me a better Mason, and being a good Mason makes me a better Catholic."
I have heard historical references to Freemasonry's aim to overthrow the papacy, etc., and from my outsider's view of the lodge and the fine men I know as my dad's brothers, I find such references outlandish, to put it kindly.