It's nothing new. Soldiers have been making fun of the President since after the Revolution ...here's the take from Battle Rattle:
The Marine Corps depends its chain of command structure, especially in a time of war. Some Marines say Stein and other vocal Marines like him are undermining that system.
It's also the second story in this week's Military Times editorial video:
I guarantee that this isn't just a Marine Corps issue.
That said, when you sign up, you don't get to choose which President's orders you follow and which ones you don't...you just hope the people at home make a good choice at the polls.