Notice what Trump is doing now. He knows the statistic is a lie. It's been debunked. He says he doesn't believe it, but uses it anyway, because it's an "awfully good statistic."
"You know, we had one month where Border Patrol was actually, there's a chart & I don't believe this, I love it in a certain way, but I don't, they said in 2019, zero terrorists came in. Now, I don't believe that, but it's an awfully good statistic, but it was very few that came in."
https://www.poynter.org/fact-checking/2024/fact-check-donald-trump-kamala-harris-never-gone-border