How is someone able to get a microwave weapon into a Trump rally? If someone did, how would they prevent the transmitter from cooking themselves? This think is going science fiction.
The Havana Weapon may not be a simple device like a laser, but rather a series of emitters which release waves, and create nodes where the waves constructively interfere.
So far, White House Staffers were hit on White House grounds, and Secret Service has no idea how. That particular area probably has more surveillance than anywhere else in the world, both technical and physical in the form of cars with hidden cameras roving 24/7 and walkers constantly roving under control of a command center, and apparently they did not see or record the device come in or go out. Either that or the Rogue intel doing it was able to compromise the surveillance in the area.
If you have not seen the surveillance op in your own neighborhood, you have a ton to see with your own eyes, before you can fully process just how hot the covert war going on in the intel agencies is right now.