That is hardly the case. Individualism and Egalitarianism and minority rights and majority rule are two examples. The Constitution was designed to keep these competing ideals in balance by separating power institutionally and by level of government. The origins of this skepticism date back to the political atmosphere of mid-eighteenth century colonial America. When the British began to overtly exercise their political sovereignty, a sentiment began to develop that the British power, although legal, was somehow illegitimate.
Populism is expressed uniquely in different historical eras.
Sometimes populist energy is directed at economic forces. At other times populists criticize cultural trends. Governmental power can also be the aim of populist reforms. Because populism manifests itself through different discourses, it it is awkward to categorize. Wherever people see illegitimate power unchallenged, the potential for populism is present.