Vice President Harris suffered a slip of the tongue at a memorial service for late Democrat Rep. Sheila Jackson Lee, D-Texas, when she seemingly mixed up her own title while delivering Jackson Lee's eulogy. 

While honoring Jackson for working to make Juneteenth a federal holiday, Harris slipped and gave herself a new title. 

"It was Sheila Jackson Lee whose bill made Juneteenth a federal holiday. Which, as a United States senator, I was proud to co-sponsor. And then as president – as vice president …" Harris said, quickly correcting herself.

"It was my honor – it was my honor, with our president, Joe Biden, to stand beside Congresswoman Sheila Jackson Lee as our president signed her bill into law," Harris continued. 

KAMALA HARRIS TO ATTEND REP SHEILA JACKSON LEE'S FUNERAL IN TEXAS

Jackson Lee died on July 19 at the age of 74 following a battle with pancreatic cancer. She is survived by her husband, Elwyn Lee, and her two children, Jason and Erica.

She also previously battled breast cancer, having been diagnosed in 2011, before announcing the following year she was cancer-free.

Harris said after Jackson Lee's death that the congresswoman was a "tenacious advocate for justice and a tireless fighter for the people of Houston and the people of America." The vice president also remembered her as a "dear friend for many years, and a fellow member of Alpha Kappa Alpha Sorority, Incorporated."

"As a member of the Congressional Black Caucus, I had the opportunity to work closely with her on many issues and to observe her leadership firsthand. She was relentless – one of our nation's fiercest, smartest, and most strategic leaders in the way she thought about how to make progress happen," Harris said in a July 20 statement. "There was never a trite or trivial conversation with the congresswoman. She was always fighting for the people of Houston and the people of America."

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Harris said she spoke with Jackson Lee days before her death, thanking her for the impact she made on her career. 

"You know, a few days before she passed, I called her, and I expressed my sincere and deep gratitude for all she had done. And I told her she had such an impact on me and my life. You know, to know Sheila is to know how she could be tough … oh my goodness, she was so loving and so encouraging, and she always encouraged me," Harris said during the service.

Harris shared more stories about Jackson Lee's tough love, saying there were times she would almost even want to hide from her. 

REP SHEILA JACKSON LEE SAYS SHE HAS BEEN DIAGNOSED WITH PANCREATIC CANCER

"Now, there were times, I will admit, if I saw her walking down the hall. I would almost want to hide. Because I knew whatever else may be on my mind, Sheila Jackson Lee would require a very serious and specific conversation with you about what she had on her mind, and then she would tell you exactly what she needed you to do to help her get it done," Harris said. 

Harris continued her praise of Jackson Lee, noting her "unwavering belief in the power that we each have to change our country for the better."

"Sheila Jackson Lee was a change maker. She worked with all her heart to lift up the people of her city, of her state, and of our nation. And to honor her memory, let us continue to fight to realize the promise of America, a promise of freedom, opportunity and justice, not just for some, but for all," Harris said. 

Fox News Digital's Landon Mion contributed to this report. 

The crisis at the southern border has become a centerpiece of the 2024 presidential race, as GOP vice presidential candidate Sen. JD Vance of Ohio hit out at Vice President Kamala Harris at the border on Thursday over her handling of the crisis — days after her campaign sought to draw a contrast between her and former President Trump on the hot-button issue.

"It's hard to believe until you see it with your own eyes, just how bad the policies of the Kamala Harris administration have been when it comes to the southern border," Vance said in Cochise County, Arizona. "They started their administration, Kamala Harris came into office... they stopped deportations on day one. They stopped construction of the border wall."

Vance tapped into Republican arguments about how the Biden administration ended what they see as successful Trump-era policies and unleashed havoc at the border.

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"We see the border wall sitting here, ready to be completed behind us. And that can't happen because of Kamala Harris' administration. They reinstated catch-and-release and they stopped Remain in Mexico," he continued. "So all these asylum claimants who come to our border, they can now get released into our country because they're not forced to stay in Mexico while we adjudicate their asylum claims." 

Vance also described securing the border as "not rocket science." 

"You just have to re-implement some commonsense policies. You've got to re-implement Remain in Mexico. You've got to stop catch-and-release," he said. "You've got to force these asylum seekers to stay in Mexico while their claims are being adjudicated. And you've got to finish this border wall and re-implement deportations." 

Vance’s border visit came after former President Trump also said he will visit the border before November, potentially multiple times. 

Republicans have hammered Harris on the southern border, given not only the crisis there but Harris’ leadership in international diplomacy on root causes, which led to her being dubbed the "border czar" by the media and Republicans.

But Harris has pushed back, highlighting an endorsement by a group of mayors in Arizona border towns "praising her long record of fighting to secure the border and fix our broken immigration system, including her work going after transnational gangs smuggling weapons and drugs as California Attorney General and bringing border crossings to their lowest level in years with tough border policies in the White House."

This week, Harris released an ad contrasting her support of a bipartisan border package unveiled in the Senate which would have increased border funding and placed some limits on entries into the U.S. The Biden administration has said it would help tackle the border crisis, but Trump and his allies killed it off.

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The video argued that Harris "helped lead the way to record low border crossings and has spent her entire career keeping our communities safe," and charged that Trump "sided with drug traffickers and the cartels to block the strongest, fairest reforms to secure the border in decades."

The Trump campaign instantly pilloried the video.

"Every statement in Kamala’s border ad is an absolute lie. The truth is that President Trump handed the most secure border in history to the Biden-Harris Administration, and they opened it up by erasing every one of his good policies," the Trump campaign charged. "As Border Czar, Kamala Harris has overseen the worst immigration crisis in American history, enabling drug cartels to smuggle deadly fentanyl across our border and allowing more than 11 million illegal criminals and terrorists from all over the world to enter our country." 

CLICK HERE FOR MORE COVERAGE OF THE BORDER SECURITY CRISIS

Harris criticized Trump at a rally in Atlanta earlier this week, saying he "has been talking a big game about securing our border, but he does not walk the walk."

She charged that the former president "tanked the bipartisan deal because he thought it would help him win an election" and pledged that "as the president I will bring back the border security bill that Donald Trump killed."

After Vance’s speech on Thursday, Harris' campaign took aim at both Trump and Vance.

"Donald Trump and JD Vance are not offering Americans solutions — only insults, chaos, and fear. They don’t want security at our border, they want to spread fear. They don’t want to help working families, their Project 2025 agenda only hurts them," Harris for President spokesperson James Singer said.

Fox News' Greg Norman and Paul Steinhauser contributed to this report.