High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! The "Plan for Establishing Uniformity in the Coinage, Weights, and Measures of the United States" was a report submitted to the U.S. House of Representatives on July 13, 1790 by Secretary of State Thomas Jefferson. At the First United States Congress, which met in 1789 when the metric system had not yet been developed in France, the system of units to be used in the future USA was one point of discussion. The Congress would have had (and still has) the constitutional right (article I, section 8) to decide on a standard of weights and measurement, but never did so. In the meeting Thomas Jefferson was employed to find the best system of weights and measures to be used in the USA. The decimal dollar had already been agreed upon in principle in 1785, but would not be implemented until after passage of the Mint Act in 1792. In mid-1790 he proposed two systems of units, one evolutionary with a mere refinement of definitions and simplification of the existing English system, the other one revolutionary being decimal and only reusing some of the traditional names.