Obviously: like Queen Amidala, Melania Trump uses an elaborately costumed body-double to foil would-be assassins!
Observers have noticed that a Secret Service agent assigned to Melania Trump looks more than a little like Mrs Trump herself:
http://www.businessinsider.com/melania-trump-secret-service-agent-body-double-conspiracy-2017-10/But which one is the real Mrs Trump?? Maybe the real Melania is lurking a few steps behind, as this look-alike Secret Service agent walks beside the President, ready to protect the Preident, and ready to take a sniper bullet intended for Melania as well.
This would explain why she slapped Trump's hand away in that video clip!
Trump: "Want to grab the hiney."
S.S. Agent: "No grabby. Working."
For this conspiracy theory to really take off, though, I think it has to involve Obama or Da Jooos.
* "Obama replaces Melania Trump with pod-grown clone!"
* "Globalist Kushner replaces mother-in-law with mindless automaton!"
-k