Senator Lindsey Graham Lindsey Olin GrahamHarris slams Trump's Supreme Court pick as an attempt to 'destroy the Affordable Care Act' Sunday shows preview: Lawmakers prepare for SCOTUS confirmation hearings before election Confirmation hearing for Trump's Supreme Court pick to start Oct. 12 MORE (R-S.C.) urged Mexico to "stop this caravan" and "keep working with Trump" on Sean Hannity's Fox show Tuesday night.

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Graham spoke about discussions he said he had with the Mexican ambassador in which he was told it was important to keep the caravan of immigrants traversing Mexico from reaching the U.S. border.

“I like what you said to me, it’s important that we keep this caravan away from the United States border, we can work [at] fixing the triangle countries, make their lives better, and we can work together to secure both sides of the border," he said.

"But, you need to stop this caravan. I appreciate what you said to me, and keep working with Trump. I think he’ll be a good ally.”

The shrinking caravan of Central Americans traveling through Mexico has been painted as a key national security threat and midterm issue by Trump.

In tweet on Monday, Trump labeled the caravan an “invasion” full of “many Gang Members and some very bad people.” He's previously claimed that that people from the Middle East are in the caravan, implying that underscores a security threat to the United States.

More than 5,000 U.S. service members have been approved to deploy to the border.

Graham also discussed other Republican voting issues for the midterm, saying that “if you’re a Republican and you’re not excited about voting, you’re legally dead.”

He highlighted two key talking points: Brett Kavanaugh Brett Michael KavanaughSenate GOP set to vote on Trump's Supreme Court pick before election Conservative groups unleash ad blitz in support of Barrett's nomination Two Judiciary Democrats say they will not meet with Trump's Supreme Court pick MORE's Supreme Court confirmation and the caravan.

“Between the Kavanaugh debacle … and a caravan trying to overrun our borders it’s been a nightmare for red-state Democrats and it’s unified Republicans,” he said.