President Trump launched his campaign in 2015 promising, "I will build a great, great wall on our southern border. And I will have Mexico pay for that wall. Mark my words."
Before long, supporters were chanting, "Build the wall!" and Trump was leading them in a call and response. Who will pay for the wall? Mexico.
He told rally-goers that a lot of politicians said it wouldn't be possible to get Mexico to pay for it. "It's going to be so easy; it's going to be so easy," Trump insisted at the time.