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MCALLEN, Texas Rep. Henry Cuellar, D-Texas, is warning fellow Democrats, including President Biden, to prepare for border security to be a top election issue in the 2024 cycle.

Standing along the Rio Grande in Hidalgo, Texas, Saturday, Cuellar emphatically told Fox News Digital the situation at the southern border will "absolutely" be on voters’ minds this year.

He traveled to the border this weekend as part of a bipartisan congressional delegation that also included Reps. Monica De La Cruz, R-Texas; Randy Weber, R-Texas; and Foreign Affairs Committee Chairman Michael McCaul, R-Texas.

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Henry Cuellar

Rep. Henry Cuellar, D-Texas, spoke with Fox News Digital along the Rio Grande during a bipartisan congressional trip to the border. (Elizabeth Elkind)

"If they're looking at the same polls I've been looking at, the American public doesn't like what's happening," Cuellar said of fellow Democrats.

"I represent an area where it's almost 80% Hispanic, a lot of Democrats," he said. "So, yeah, the polls are showing that it's an important issue."

Speaking of Biden, he said, "It’s in the president’s best interest politically to come up with a solution on border security."

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A Fox News poll from last month found that eight in 10 voters think the situation at the southern border is either an emergency (34%) or a major problem (45%). 

The group of lawmakers toured sections of the border Saturday and met with border and immigration officials. White House and Senate negotiators are working to cobble together a deal on border reform in exchange for GOP support for Biden’s $106 billion supplemental funding request for Ukraine, Israel and other issues.

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Cuellar insisted a show of bipartisanship like their trip was a move in the right direction.

"It's important that if the negotiations go well, and they work something out, that some of us are able to [be] bipartisan," Cuellar said.

President Joe Biden

President Biden speaks during a meeting of the National Infrastructure Advisory Council in the Indian Treaty Room of the White House in Washington, D.C., Dec. 13, 2023. (Al Drago/Bloomberg via Getty Images)

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He suggested reforms on what constitutes legal asylum was something Democrats were coming around to.

"For example, on the asylum when people come in, I support making changes. There's a lot of Democrats that don't," Cuellar explained. "Now, Democrats are saying, ‘Maybe we need to look at that.’ So, I think we're seeing now a shift where people are willing to get out of their comfort zones. If we have enough Democrats and Republicans, we can get it done."