“Trump has to deliver on something regarding the wall, he based his 2016 campaign on border security.”
Border security is a large, important issue — but, it’s far from the only large, important issue that Trump campaigned on. Trump’s record of delivery is impressive.
It would be fair to say that border security was one of the top themes of his 2016 campaign; but not that the campaign was “based” on that.
It was a big one to me.