Because there have been so many priests (IN THE USA: HERE THEY LOVE NOVALTY) denying Catholics the RIGHT to receive Communion on the tongue, the Vatican's Congregation for Divine Worship and the Discipline of the Sacraments had had (on many an occasion;) ) has had to intervene. If ALL US Bishops would immediately castigate any priest religious or diocesan when these priests refuse (often with angry attitudes) Communion on the tongue to any catholic, ROME would NOT have to intervene. However, as with the case of EXTRA-ordinary Eucharistic "ministers", the issue of Communion on the tongue, finds itself over and over in the hands of Rome, when MANY complaints (PLEASE: anyone who is denied communion on the tongue, hire a good Canon Lawyer, and WRITE to Rome!!) are given to the Holy See.
Note: the OPTION is Communion on the HAND. The NORM is Communion on the tongue (not the other way around:tiphat: ).