Is the United States the world’s greatest country? When asked that question eight years ago, 70 percent of citizens surveyed said yes. Now, a recent study by the Chicago Council on Global Affairs shows that only 54 percent answer affirmatively. Democrats are likelier to see their country as normal and Republicans are likelier to see it as uniquely great, but the decline is bipartisan. It’s also age-based: A similar Pew study found that respondents under 30 were markedly less enamored of their country than those over 50. Across the board, U.S. exceptionalism is faltering.