Yes. And he did. With an autopen.
I doubt the President’s use of technology to sign bills while out-of-pocket renders the signature ineffective.
SnakeDoc
HE did NOT sign it - a machine did ...
That is the crux of the issue ...
AND, he DID NOT have to leave town before signing - he coulda put the paper up to the door of Marine One and signed there just before leaving ...
Might as well get some rubber stamps made and keep them on every desk in the white hut. After all, you wouldn’t want ears to miss a golf game.