Points well taken.
Even now our republic could be restored but the hill is VERY steep and the road VERY long indeed!
I am not as optimistic as you are.
Once the framework of a human society becomes thoroughly corrupt, the society has to be run through a crucible and restructured before health is restored. God alone can change hearts, and at least on the level of society, this is how He operates.
If I were a Muslim or a Calvinist who held that how God interacts with the world may turn on a dime, or an ancient Jew looking for a Messiah to restore temporal greatness, I would have hope. But I am a Catholic theologian, firmly holding to what the Church terms “the economy of salvation”—God acts in broadly consistent ways throughout history that shed light on each other.
Republics require wide-spread virtue to operate well. Virtue when corrupted is only re-acquired through suffering. Corrupt republics facilitate the avoidance of suffering. If it were not for the spiritual realm, I would find things very bleak indeed.