ADDED: Trump is the old "Feed It with Fire" TV trope:
IN THE COMMENTS Before I found the TV Tropes bit (above), I'd said: "What are people supposed to do now? He's like a movie monster that gains energy from the attacks. That is some old movie, right? Some monster is strengthened by nuclear bombs and such." And EDH pointed us to: "'Mars Attacks' Nuclear Scene." The clip is very funny and worth watching the commercial, but for the impatient, the Martians capture the energy of the nuclear bomb, smoke it, and giggle. If this analogy holds true, then — spoiler alert — maybe Trump can be defeated with Slim Whitman music.Pyrrhon: Try my pyroweaponry on for size!The Monster of the Week is apparently Immune to Bullets, but not only that, it's getting stronger too! Maybe you shot it with an Energy Weapon, maybe you intervened in a situation and caused a worse problem to appear, or maybe you just hit its Berserk Button, but it didn't die, and now it's stronger than ever. Feed It with Fire is the process by which attempting to kill or destroy something ends up making it grow, become more powerful, or otherwise help it out.....
(boss turns red)
Pyrrhon: That's... odd.
Palutena: Apparently adding heat to heat only makes things hotter.
— Kid Icarus: Uprising