Pence does not have the backbone to fight.
I don’t think we really know what is going on; remember, our President, Donald J. Trump, is not a politician, but a shrewd businessman with years upon years of wisdom and understanding, and a genius in many areas to boot. God has blessed him and Melania greatly (his beautiful wife, our First Lady, speaks five languages).
When President Trump addresses things about VP Pence, it may be to lead the useful idiots down the wrong trail and get them lost. That’s pretty darn easy, for when someone trusts in their own intellect and are prideful (go figure), they then fall into the pit of their own folly.
Vice President Pence may be under the same protection as our duly-elected President has, directing personal security forces to watch over him and his family as well. We know the FBI has been compromised, CIA, and many other entities.