Evidence suggests the US has been a de facto oligarchy since at least 2014: https://www.cambridge.org/core/journals/perspectives-on-politics/article/abs/testin

Evidence suggests the US has been a de facto oligarchy since at least 2014: https://www.cambridge.org/core/journals/perspectives-on-politics/article/abs/testing-theories-of-american-politics-elites-interest-groups-and-average-citizens/62327F513959D0A304D4893B382B992B https://www.cambridge.org/core/journals/perspectives-on-poli...