The boom of alternative medicine in the US – and consequently in the rest of the developed world – is intimately connected with a NHI centre now called NCCIH (National Center for Complementary and Integrative Health). It was founded in the early 1990s because some politicians were bent on promoting quackery. Initially the institution had modest funding but, after more political interference, it had ample cash to pursue all sorts of activities, including sponsoring research into alternative therapies at US universities. A most interesting video summarising the history of the NCCIH can be seen here...
Read on: The mainstreaming of quackery: the role of the ‘NCCIH’