That's what I thought the first time (or two) that I watched the video. But then I watched much more carefully. At 3:00 in the video, I now think Gary Marcus and others are correct; he is indeed pantomiming fellatio. And the crowd that's visible seems to love it.
If you watch the full clip you can see that Trump is complaining about the quality of the mic, he is not doing anything sexual..
That's what I thought the first time (or two) that I watched the video. But then I watched much more carefully. At 3:00 in the video, I now think Gary Marcus and others are correct; he is indeed pantomiming fellatio. And the crowd that's visible seems to love it.
https://www.c-span.org/video/?c5139793/president-trump-jokes-microphone-issues
It's not either or