"We have to have borders, and we have to have them fast," he said. "And we need security. We need the wall. We're going to have it all. And again, that wall has started. We got 1.6 billion. We come up again on September 28th, and if we don't get border security, we'll have no choice. We'll close down the country because we need border security."
In his speech Saturday night, Trump railed against the Democratic Party on a range of issues, including immigration.
"A vote for a Democrat in November is a vote for open borders and crime," Trump said.
He continued, "The open border policies of the Democratic Party are not just wrong, they're dangerous, and they're in fact deadly. They're deadly."