What are his political views otherwise? Is he a libertarian in other aspects as well? Need to know more about this guy - he seems electric.
On this copy of the speech, go to ~ 6:00 mark.CW
Why in the world did he feel the need to insult them prior to asking them to draft a fair and equitable trade agreement?
Because he's been insulting them for nearly two decades. It's second nature for him and likely controlled by his autonomic nervous system.