ironic that he is the archbishop of the Diocese of San Francisco... just to the south, Bishop McGraw openly supports communion for unrepentant homosexuals while denying the same to Protestants (even those receiving Catechism through RCIA in the Diocese if San Jose). Either the DSJ no longer considers homosexuality a sin, or considers a baptized Protestant converting to Catholicism less worthy of receiving the sacraments... odd position for the DSJ to take either way.
I must agree with +McGrath on this, someone who is in the process of conversion is most welcome to make a spiritual communion, however the Sacrament of Holy Communion must be reserved to those in full communion with the Church.