Have you ever considered using America's Scorpio Rising chart with mid-Leo at Midheaven?
No matter which natal chart you prefer for America, slow movers Uranus and Neptune were in a "hidden square" aspect (256 degrees) on July 4, 1776, and you may find that reading this aspect as a square (90 degr) describes our national character as well as any factor you care to identify...and some of our current social and political problems as well.