We have to look at the whole world, not just the US. Europe has left God. Their vast chruches are empty on Sundays. The have abortion, gay marriage, etc. The same as the US. China is communist and has no regard for human life. Sin is rampant world wide. Disease, now with Covid is world wide. America was the last hope of the world. England was before America. England had the largest empire in the world, ever. India, half of Africa, Canada, Australia, New Zealand, all were under English rule. They spread the Gospel throughout their empire via their church, but also via Methodists and others. Their empire fell apart after WWII. America then sent missionaries all over the world in the 1950's and 1960's and beyond. Now we are no longer doing so as much. Recently, especially in extremist Muslim controlled areas, Christians have been beheaded and killed for preaching the Gospel, in China they are jailed or set to reeducation camps. Persecution was not as bad 40-50 years ago. Many were welcomed because they taught them how to farm, drill a well, read, write, and brought medicine and hospitals. Today, not so much.
The signs are everywhere. The only thing that hasn't been completed is the Temple in Jerusalem. When that is rebuilt, then the end is very near.