This is a list of notable Irish Americans, including both original immigrants who obtained American citizenship and their American-born descendants.
At least 22 presidents of the United States have some Irish ancestral origins,[90] although the extent of this varies.
For instance, President Clinton claims Irish ancestry despite there being no documentation of any of his ancestors coming from Ireland, while Kennedy has strongly documented Irish origins.
Ronald Reagan's great-grandfather was an Irish Roman Catholic.
Kennedy and Joe Biden were raised as practicing Catholics.