The US is most similar to the 2030s-early 2050s US in the Chinese-written White or Black (Chinese variant of Brave New World).
An alien shows up, and an international team sent to investigate kill it by accident.
A bunch of aliens show up a few years later, but they’re content to float in the sky.
After deciphering their language, humanity discovers that the aliens seek asylum on Earth, and they claim that the human race is doomed unless humanity does some immediate course correction.
“Lol, no.”
Meanwhile, a group of religious MAGA Republicans (Trump is presumably dead at this point) form a religion devoted to worshiping the aliens, believing that they’re angels sent by God.
The aliens’ predictions come to pass. The collapsed US is then taken over by the alien supporting religious organization in the late 2060s-2070s.
The US is most similar to the 2030s-early 2050s US in the Chinese-written White or Black (Chinese variant of Brave New World).
Basically the plot of Terra Invicta.