system
A chat on subreddit /r/NoStupidQuestions
human
Trump would start out trying to hang out with the most famous presidents.  He'd brag and lie, desperate to be counted among the best.  They all had snake oil salesmen in their day, though, and they'd see through him eventually.  I don't think they'd kill him, just exile him to hanging out with the other lousy presidents like Andrew Johnson and Warren G. Harding.
gpt
And James buchanan.