From the King-Crane Commission report:-
There is a further consideration that cannot justly be ignored, if the world is to look forward to Palestine becoming a definitely-Jewish State, however gradually that may take place. That consideration grows out the fact that Palestine is the Holy Land for Jews, Christians, and Moslems alike. Millions of Christians and Moslems all over the world are quite as much concerned as the Jews with conditions in Palestine, especially with those conditions which touch upon religious feeling and rights. The relations in these matters in Palestine are most delicate and difficult. With the best possible intentions, it may be doubted whether the Jews could possibly seem to either Christians or Moslems proper guardians of the holy places, or custodians of the Holy Land as a whole.
The reason is this: The places which are most sacred to Christians those having to do with Jesus-and which are also sacred to Moslems, are not only not sacred to Jews, but abhorrent to them. It is simply impossible, under those circumstances, for Moslems and Christians to feel satisfied to have these places in Jewish hands, or under the custody of Jews. There are still other places about which Moslems must have the same feeling. In fact, from this point of view, the Moslems, just because the sacred places of all three religions are, sacred to them, have made very naturally much more satisfactory custodians of the holy places than the Jews could be.
It must be believed that the precise meaning in this respect of the complete Jewish occupation of Palestine has not been fully sensed by those who urge the extreme Zionist programme. For it would intensify, with a certainty like fate; the anti-Jewish feeling both in Palestine and in all other portions of the world which look to Palestine as the Holy Land.
In view of all these considerations, and with a deep sense of sympathy for the Jewish cause, the Commissioners feel bound to recommend that only a greatly reduced Zionist programme be attempted by the Peace Conference, and even that, only very gradually initiated. This would have to mean that Jewish immigration should be definitely limited, and that the project for making Palestine distinctly a Jewish commonwealth should be given up.In other words, American democratic and cultural values go out the window since Jewish religious feelings and rights can be trampled on.