Reuters/Ipsos poll: A waste of money? Trump's border wall falling flat in Arizona
Giuliani: Trump and Mexico's president weren't supposed to discuss payment for the wall at meeting
Tim Kaine: Donald Trump's Mexico trip was a 'diplomatic embarrassment'
Enrique Peña Nieto says yes, he did tell Donald Trump Mexico wouldn't pay for wall
Trump memo explains how Mexico will pay for border wall
Former Mexican president: We're not paying for a 'stupid' wall