The United States has fallen in the rankings of the World Happiness Report for the second year in a row. Currently, the US is ranked eighteenth out of more than 150 countries, making it the worst ranking since the annual report began being published in 2012. The report, published by the Sustainable Development Solutions Network (SDSN), an initiative of the United Nations, measures levels of happiness and changes in happiness globally. This year, along with the usual rankings, the report focuses on migration within and between countries. “The most striking finding is the extent to which happiness of immigrants matches the locally born population,” John Helliwell, a University of British Columbia economist who co-edited the report, tells the Washington Post. “The happiest countries in the world also have the happiest immigrants in the world.”