Dominion cruisers and treaty allowances

How could Britain persuade the United States to permit more cruisers for the Dominions?

Dominion cruisers counted within the British treaty allowance, so additional construction would require raising the recognized British and American allowances rather than treating Dominion ships as exempt.

The obstacle was accounting under the treaty system rather than British unwillingness to build for the Dominions. Their cruisers were charged to the British allowance. A larger Dominion force therefore required a larger recognized British total and a corresponding settlement with the United States. Alliance force structure could not be separated from the numerical bargains written into naval arms-control agreements. Political identity within the empire did not make a Dominion hull invisible to treaty accounting.