Not to take away from Cahn, because I personally do think he's on to something (the seven year pattern of stock market crashes on Elul 29 is too uncanny to ignore), but most of the founders of America, including George Washington were Deists (by Washington's pastor's own admission even). Even further than that, the majority were involved in Freemasonry which like many other secret societies are rebranded Babylonian and Egyptian mystery religions which worship Baal/Ashtoreth. You can't be a true Christian and a freemason because of the secret rituals and vows freemasons require which go against the root of what it means to be a follower of Jesus. (See testimony of a former 32nd degree freemason turned christian here:
https://www.youtube.com/watch?v=7nL7_B0CIFc)
I personally take the view that America is the Mystery Babylon of Revelation 18 as crazy as it sounds. Here's a talk by Rick Coombes who tried to prove America wasn't Mystery Babylon and ended up writing a book saying that it was. Many Bible Prophecy scholars are also taking on this view including Gary Stearman of Prophecy in the News, one of the largest bible prophecy ministries in the US.
https://www.youtube.com/watch?v=RoiHuNaEIjs
On another note, I've been trying to find the sources for George Washington's consecration of America at Ground Zero / St. Paul's chapel. Does anyone have a link to this historical record?