Trump is right as you don’t piss off fellow senators by calling co-workers liars etc. You have to work with them so you state the facts and people will make up their own mind. Name calling and frequent confrontations at work normally end up with a firing.
Agree... calling large groups of people stupid and morons, idiots works much better.
You're completely missing the point. You don't piss off fellow senators by lying to their face. When you do, you can expect to be called on it. Are you telling me that it's actually better to lie, than it is to be called a liar for doing it?