One week ago, a Twitter war erupted between Donald Trump and the hosts of Morning Joe, Joe Scarborough and Mika Brzezinski. Whereas the pair had been among the first in the media to take Trump’s chances seriously, in recent times they had become very critical of the Republican candidate. [snip] The feud continued this morning. After an extended discussion of Trump’s mental health, with Scarborough suggesting that the Donald is a “sociopath” rather than the “psychopath” that former Obama adviser David Plouffe called him, Joe went on a riff, taunting Trump as “Amnesty Don” for his softening position on immigration....