Easily done.
Here is the Churchill Whitepaper of 1922.
{...
Further, it is contemplated that the status of all citizens of Palestine in the eyes of the law shall be
Palestinian, and it has never been intended that they, or any section of them, should possess any other juridical status. So far as the Jewish population of Palestine are concerned it appears that some among them are apprehensive that His Majesty's Government may depart from the policy embodied in the
Declaration of 1917. It is necessary, therefore, once more to affirm that these fears are unfounded, and that that Declaration, re affirmed by the Conference of the Principle Allied Powers at San Remo and again in the Treaty of Sevres, is not susceptible of change.
...}