THE CAPABILITY APPROACH

Yes, we're actually having this conversation 

http://www.salon.com/2017/08/20/brian-stelter-opens-sunday-show-by-asking-if-president-trump-has-a-mental-illness/
Brian Stelter opens Sunday show by asking if President Trump has a mental “illness”

More: http://crooksandliars.com/2017/08/rep-schiff-trumps-mental-stability-there 
Rep. Schiff On Trump's Mental Stability: 'There Are Serious Issues