People are talking about the balls of Pena Nieto but is not so much about balls than Trump not leaving him with another option than not to play. Is political suicide for him and his party to do the meeting when Trump tries to insist about the wall BS in public at twitter, dunno if Trump understands how willing was the Mexico goverment in at least make a deal if he played the diplomacy game but he just make it impossible. Mexico has been bullied by US before but by people that actually understands how politics works here.
We are fucked economically, but there was no other way after that shitty twitter ultimatum. There is no benefit neither for Pena, his party and for Mexico in having a meetig with Trump when is clear he doesnt want to make a fair deal in any capacity.