Let us be mindful of the history of Confirmation.  In the beginning, all Sacraments of Initiation were celebrated by the bishop.  As the Church grew, and it became more difficult for candidates to come to the bishop, or the bishop to go to them in a timely manner, presbyters were given the faculty to baptize, but the bishop retained the celebration of Confirmation to himself so that he would personally be involved in the Initiation of his people.   There is a value for baptized Catholics to come face to face with their bishop at least once in their lives.  The experience also strengthens their connection to the diocesan and universal Church.

 If at all possible, do not deny the experience to validly baptized Catholics who have been practicing the faith for a long time.