Why, in the ritual book Rite of Christian Initiation of Adults, of course! In the section on “reception of baptized Christians”, paragraph 481 states:
It is the office of the bishop to receive baptized Christians into the full communion of the Catholic Church. But a priest to whom the bishop entrusts the celebration of the rite has the faculty of confirming the candidate within the rite of reception, unless the person received has already been validly confirmed.
Canon law tells us about valid confirmation:
Can. 882 The ordinary minister of confirmation is a bishop; a presbyter provided with this faculty in virtue of universal law or the special grant of the competent authority also confers this sacrament validly.
Can. 883 The following possess the faculty of administering confirmation by the law itself:
1/ within the boundaries of their jurisdiction, those who are equivalent in law to a diocesan bishop;
2/ as regards the person in question, the presbyter who by virtue of office or mandate of the diocesan bishop baptizes one who is no longer an infant or admits one already baptized into the full communion of the Catholic Church;
3/ as regards those who are in danger of death, the pastor or indeed any presbyter.
Can. 884 §1. The diocesan bishop is to administer confirmation personally or is to take care that another bishop administers it. If necessity requires it, he can grant the faculty to one or more specific presbyters, who are to administer this sacrament.
So, for those who were “born and baptized in a separated ecclesial Community” (RCIA, #473), confirmation is necessary unless they’ve already been validly confirmed. That confirmation would have to have been performed by a valid bishop (or his designate). A Methodist minister is neither of these.
(Edited to add: Please be gentle with your pastor, ok? Don’t just run to him, waving a printout in your hands and demanding he follow the rules of the Church. Fair enough? ;))