He does it deliberately - intentionally disrespectful.
(Also, after o’Bummer stuck his nose into China’s internal affairs, chastising the Chinese president XI, XI very pointedly unplugged his earpiece to his translator - and later, told O’bummer, on world television, to mind his own business.
Aren’t we proud?
https://www.youtube.com/watch?v=F8ajCxVF8vs
Good Lord, free us from this ignorant, arrogant, American hating puke...