The Union Act of 1840

XLIII. And whereas by an Act passed in the Eighteenth Year of the Reign of His late Majesty King George the Third, intituled An Act for removing all Doubts and Apprehensions concerning Taxation by the Parliament of Great Britain in any of the Colonies, Provinces and Plantations in North America and the West Indies; and for repealing so much of an Act made in the Seventh Year of the Reign of His present Majesty as imposes a Duty on Tea imported from Great Britain into any Colony or Plantation in America, or relating thereto, it , that "the King and Parliament of Great Britain would not impose any Duty, Tax, or Assessment whatever, payable in any of His Majesty's Colonies, Provinces, and Plantations in North America or the West Indies, except only such Duties as it might be expedient to impose for the Regulation of Commerce, the net Produce of such Duties to be always paid and applied to and for the Use of the Colony, Province, or Plantation in which the same shall be respectively levied, in such Manner as other Duties collected by the Authority of the respective General Courts or General Assemblies of such Colonies, Provinces, or Plantations were ordinarily paid and applied: And whereas it is necessary, for the General Benefit of the Empire, that such Power of Regulation of Commerce should continue to be exercised by Her Majesty and the Parliament of the United Kingdom of Great Britain and Ireland, subject nevertheless to the Conditions hereinbefore recited with respect to the Application of any Duties which may be imposed for that Purpose;'' be it therefore enacted, That nothing in this Act contained shall prevent or affect the Execution of any Law which hath been or shall be made in the Parliament of the said United Kingdom for establishing Regulations and Prohibitions, or for the imposing, levying, or collecting Duties for the Regulation of Navigation, or for the Regulation of the Commerce between the Province of Canada and any other Part of Her Majesty's Dominions, or between the said Province of Canada or any Part thereof and any Foreign Country or Stint, or for appointing and directing the Payment of Drawbacks of such Duties so imposed, or to give to Her Majesty any Power or Authority, by and with the Advice and Consent of such Legislative Council and Assembly of the said Province of Canada, to vary or repeal any such Law or Laws, or any Part thereof, or in any Manner to prevent or obstruct the Execution thereof: Provided always, that the net Produce of all Duties which shall be so imposed shall at all Times hereafter be applied to and for the Use of the said Province of Canada, and (except as hereinafter provided) in such Manner only as shall be directed by any Law or Laws which my be made by Her Majesty, by and with the Advice and Consent of the Legislative Council and Assembly of such Province.

King George wrote this around the time of his death. Maybe to clear his consccience. It took 20 years to publish and then was hidden.