米制
On December 31, 2012, a petition was created on the White House's petitioning system, petitioning the White House to "Make the Metric system the standard in the United States, instead of the Imperial system." On January 10, 2013, this petition garnered over 25,000 signatures, exceeding the threshold needed to require the Obama Administration to officially respond to the petition. Patrick D. Gallagher, director of the National Institute of Standards and Technology, provided the official response stating that customary units were defined in the metric system, thus making the nation "bilingual" in terms of measurement systems. Gallagher also said that using the metric system was a choice to be made by individuals.