The U.S. mainstream expands – again

Building on neo-assimilation ideas, we conceptualise the ‘mainstream’ and then find compelling evidence of its expansion in the U.S. in the rising number of individuals who come from mixed minority–majority backgrounds. In terms of the contexts in which they are raised and their social identities and affiliations, on the whole they resemble whites more than they do minorities, and they marry whites at very high rates. Individuals who are partly black are exceptions to some of these patterns. We note an important similarity between this expansion and the one associated with post-World War II assimilation: both are connected with growing diversity of identity and ethnic expression in the mainstream. An equally important difference lies in the more modest magnitude of the current expansion. We close with a series of questions for future research raised by our argument.