[anigbrowl]

Not in this case, since the US hasn't sanctioned Denmark. Trump's rage bleating on Truth Social doesn't constitute official policy. Now, if restrictions on doing business with Denmark were published in the Federal Register, it could get complicated.

[caseysoftware]

I admit, other than in name, I'm not familiar with the Logan Act. Where does it require sanctions or similar?

[anigbrowl]

There isn't a dispute is there isn't any sort of official government publication about it. Late night rants on Truth Social don't meet that standard.