Mt. Rushmore As we approach the nation’s semiquincentennial celebrations, the American Enterprise Institute released a new public opinion survey exploring Americans’ views about the nation’s past and present. The survey is part of AEI’s America at 250 initiative, and it expands on a survey conducted 30 years ago by the Public Agenda Foundation in NYC. Americans continue to endorse many of the ideals the founders championed, and they worry about their erosion.