Trump had nothing to do with this, North Korea merely did not want to have to deal with the arrangements when he died and sent him home. Also they could no longer use him for propaganda purposes due to his deterioration.
Trump has less international influence than Obama did, since his election Trump has reduced US influence among both allies and enemies possibly with the exception of Saudi Arabia (you know, where most of the 911 terrorists came from) since he just confirmed a $100 billion arms sale to them.
I have to laugh when I read statements from his disciples and adherents as to how great Trump is, there is not much to support that statement, but they still have faith. Guess one thing is certain though, with their "worship" of Trump they cannot claim to be Christian.