### Clue: Bum President making you mad essentially (5)
### Answer: TRAMP 
 ### Explanation: Definition: Bum
 "Trump"(current US President) **with** "u"(letter representing "you", as in text messaging, say, or in Sinead O'Connor's song) **replaced by**(making …) **middle letter of**(… essentially) "mad".
And he does have that effect on many people.