Conservatives who should know better fear an erosion of the American culture if we open our borders to immigrants, but the happy truth is that immigrants to a high degree are the American culture.
But let's put their shared consensus another way: Somehow it became a conventional view in contemporary American politics that it is non-urban conservatives who in every case have to accommodate their beliefs to a national culture created by people who live somewhere else.
Between Hollywood depictions of disasters and the hopes of conservatives elsewhere, the notion of California physically sliding into the Pacific Ocean is an enduring element of popular culture.