Robert Sungenis says many interesting things.
How about trying the USCCB Guidelines on the Presentation of Jews and Judaism in Catholic Preaching at
usccb.org/liturgy/godsmercy.shtml ?
“28. It is becoming familiar in many parishes and Catholic homes to participate in a Passover Seder during Holy Week. This practice can have educational and spiritual value. It is wrong, however, to “baptize” the Seder by ending it with New Testament readings about the Last Supper or, worse, turn it into a prologue to the Eucharist. Such mergings distort both traditions. The following advice should prove useful:
When Christians celebrate this sacred feast among themselves, the rites of the haggadah for the seder should be respected in all their integrity. The seder . . . should be celebrated in a dignified manner and with sensitivity to those to whom the seder truly belongs. The primary reason why Christians may celebrate the festival of Passover should be to acknowledge common roots in the history of salvation. Any sense of “restaging” the Last Supper of the Lord Jesus should be avoided … The rites of the Triduum are the [Church’s] annual memorial of the events of Jesus’ dying and rising (Bishops’ Committee on the Liturgy Newsletter, March 1980, p. 12).”
A discussion of the issue might also benefit from considering the materials of the Commission of the Holy See for Religious Relations with the Jews which is part of the Pontifical Council for Promoting Christian Unity, including the Guidelines and Suggestions for implementing the conciliar declaration Nostra Aetate