Immigration may determine the destiny of the US.
Debt may determine the destiny of the US.
Actually, while it’s mortal men making the decisions it will be Stupidity (the ideological sort rather than the “hey, watch me do this!” sort) that will determine the destiny of the US.
Either the maleducated and indoctrinated so as to be unable to sustain a civilization Left will do exactly what the Cultural Marxists hoped they would do or Christ will return before they can.
Even if Christ doesn’t return for a long time yet Cultural Marxism has metastasized, and is a cancer that will be a millstone hung from out necks even if we can resist their efforts to go swimming in the sea.