Here's the full-list of all the US Presidents that have been extended a second invitation by the British Monarchy to a state visit:

President Donald J. Trump
That's it.
That's the whole list.
Chew on that for a moment.
This invitation is beyond extremely rare (having never happened before) and is therefore historically significant.
Safe to say, given the larger events in play both here at home and worldwide, I believe there is a good reason as to why such a remarkable event is occurring again on Sept 17th, 2025.
Notably, during the ceremonial events, DJT breached royal protocol (2x) in 2018 as a guest of Queen Elizabeth II for his first state visit.
First, refusing to signify deference to the Throne, he (and Melania) refused to bow to the Queen. Predictably, this Royal snub sent the left here and in the UK into an absolute tizzy. But it also makes his unprecedented second visit even more intriguing.
But it's the next part I'd suggest paying close attention to, and that's the ceremonial tradition of 'inspecting the Guard of Honour'.
This part of the pomp and circumstance of the visit is significant due to its importance as signifying the Monarch's role as the ceremonial head of the UK's armed forces.
If you remember, Trump made headlines worldwide for stepping in front of the Queen while inspecting her troops...again sending the same folks into a foaming spittle meltdown extrodinaire.
Now, were I a betting man, I'd expect Trump to follow suit on both fronts this time around.
And when/if that occurs, while some (especially in the media in the UK) will predictably melt TF down, decrying Trump as just an elected official and boorish commoner, I believe there would be much more going on here than most of the public understands.
All told, I absolutely believe this was (and would be again) intentional, and therefore intentionally symbolic.
Why?
It's simple.
Because, and this is related to the reason mentioned above, it projects to the world who's really in charge of not only the Monarchy, but the old world order big picture.
Eyes on.
Mike