There's bigger news than what President Trump may or may not have said in calls to the leaders of Mexico and Australia. The bigger news is that we know about this at all, and how we know it.
Try to imagine this: Your boss gets on the phone to an important client or vendor. While he's talking, several other people are in the room taking notes on the conversation. He trusts you as part of his team, so you're allowed to be in the room and allowed to take notes.
Shortly thereafter, you decide to provide these transcripts to a business or trade publication that covers your industry, on the condition that they not say who they got them from. They publish them in toto. Your boss is embarrassed. All his competitors are now aware of competitive information that puts your company at a decided disadvantage in the market.