Portland has a new Bishop, Robert Deeley. Rev. Guy Selvester, Governor-At-Large at the American Heraldry Society shared in the Society’s web forum the Bishop’s coat of arms now impaled with those of the Diocese. I found the armorial bearings on the Diocese website.
Ecclesiastic heraldry can be hit or miss in terms of design quality, but I must say the Bishop’s arms are quite sharp. It helps being impaled with arms designed by Pierre de Chaignon la Rose.