The faithful have a right to receive Communion kneeling, as a longstanding custom, regardless of local adaptations. But Bishop Tod Brown of Orange, California, disagrees. Gerald has video of Brown virtually wrestling with a woman who knelt to receive Communion at one of his Masses. He also has her personal testimony about what happened.
And when I say the faithful have a right to receive while kneeling, I mean that this has been confirmed recently (2002) by the Congregation for Divine Worship:
The Congregation in fact is concerned at the number of similar complaints that it has received in recent months from various places, and considers any refusal of Holy Communion to a member of the faithful on the basis of his or her kneeling posture to be a grave violation of one of the most basic rights of the Christian faithful, namely that of being assisted by their Pastors by means of the Sacraments (Codex Iuris Canonici, canon 213). In view of the law that “sacred ministers may not deny the sacraments to those who opportunely ask for them, are properly disposed and are not prohibited by law from receiving them” (canon 843 ¶ 1), there should be no such refusal to any Catholic who presents himself for Holy Communion at Mass, except in cases presenting a danger of grave scandal to other believers arising out of the person’s unrepented public sin or obstinate heresy or schism, publicly professed or declared. Even where the Congregation has approved of legislation denoting standing as the posture for Holy Communion, in accordance with the adaptations permitted to the Conferences of Bishops by the Institutio Generalis Missalis Romani n. 160, paragraph 2, it has done so with the stipulation that communicants who choose to kneel are not to be denied Holy Communion on these grounds.