My apologies to thistle -my reply was a bit shrill. The sources only refer to Eucharistic mimisters AFAIR none cites any prohibition of blessings at communion.
#3 could be read to refer to all people distributing Holy Communion, even priests. #4 refers to all instances of divorced-remarried people approaching for communion, even if it is a priest wanting to give a blessing. #5 refers to all people who cannot receive communion, even if it is a priest wanting to give a blessing.
On the question of your bishop and how anyone might dare to suggest he might not be 110% correct in everything he says, thinks and breathes: his authority for interpreting this sort of thing does not extend beyond his own diocese. So I think there is no harm in us examining the stock letter sent to people all over the world from the CDW, even if your bishop is unaware, disagrees or does not care &c.
It would be interesting to know
exactly what the bishop or his staff said. Was it “I decree that my EMHCs must bless anyone and everyone who lines up in front of them”, or was it more “I’m not intending to force parishes to change their current practice”
You say that “There is no law against a priests ability to bless, either in or out of mass.” There are, of course, several possibilities for blessings within Mass; the blessing and dismissal at the end; the nuptial blessing; various selections from the Book of Blessings which can be inserted into Mass. However, I’m not aware of any book or authority which prescribes a blessing to be given in place of Holy Communion. It’s not in the Missal. If you know where it is, please enlighten me.
Sacrosanctum concilium tells us that
Therefore no other person, even if he be a priest, may add, remove, or change anything in the liturgy on his own authority.
, which is quoted by John Paul II in
Inestimabile donum and probably other places too.
Redemptionis sacramentum is thousands of words on the same theme, though I think
SC summed it up most succinctly.
Therefore, you don’t need to look for something specifically prohibiting the exact action you are thinking of. The minds of liturgical abusers are more imaginative and fast-moving than the ability of the Holy See to respond in official documents to each wacky new idea. The law you seek is simple: If it isn’t in the books, it shouldn’t be in the Mass. “Say the
black, do the
red”