If the Pope were to ask me to adore him, I would tell him to go to confession and ask forgiveness of so great a sin before attempting to celebrate Mass. For he would commit mortal sin did he accept adoration even as it would be mortal sin to offer it to him.
Holiness, Question 451 from Radio Replies Volume I Copyright © 1938 (by Rev. Dr. Leslie Rumble, M.S.C. and Rev. Charles Mortimer Carty).