Armitage72
Philosopher
I only caught a glimpse of it on live TV. However, to be fair, at some point others in the front row including Michelle Obama had placed theirs on the kneeler in front of them also. But as far as I know, everyone except Trump picked theirs up again and followed along with the service.
There's also been some criticism because Trump stood there scowling while everyone else was reciting the Apostle's Creed. The words were printed in the program, but they may have been too big for his reading ability, with no pictures.