Both have their agendas, and they both get the opportunity in person to size each other up for a continuing dialogue. I do not expect Nieto to publicly agree with Trump, but Trump holds the winning hand if elected to get Mexico and Mexicans either directly or indirectly to pay for the wall. It’s a lot of money at stake for Mexico.
I think you overestimate the hand Trump is holding.
I’ve noticed that Lower Deck is pretty much a negative nellie about Trump. Downbeat, defeatism etc.