The former U.S. vice-president (and other half of a meme-worthy bromance with Barack Obama) sent his regards Louis-Dreyfus via Twitter, saying, "We Veeps stick together."
Of course, as the show's title implies, the actress portrays fictional VP Selina Meyer on Veep.
Biden went on to share the support of his entire family with Louis-Dreyfus. He also shared a winning photograph of himself and the Veep star from a 2014 White House Correspondents' Dinner video clip.
Read Biden's full message below.
We Veeps stick together. Jill and I, and all of the Bidens, are with you, Julia. pic.twitter.com/JP0c2wtrJ6— Joe Biden (@JoeBiden) September 28, 2017
Louis-Dreyfus, meanwhile, returned the mutual Twitter love almost immediately.
Revisit their 2014 video team-up below.
Biden's message followed support from another high-profile Democrat, Hillary Clinton. The former presidential candidate shared her well wishes, and praised Louis-Dreyfus for using her platform to fight for health care reform.
Julia, you're in our thoughts and our hearts. Inspired but not surprised to see you using your platform for good in this difficult moment.— Hillary Clinton (@HillaryClinton) September 28, 2017
Other celebrities have also reached out to the actress with messages of support. Read some of those below.
I love @OfficialJLD, she's one of the strongest people I know and cancer is gonna be real sorry it tried any weird moves on her.— Lena Dunham (@lenadunham) September 29, 2017
Mama, find me. Let's talk if you want— christina applegate (@1capplegate) September 28, 2017
Love you Julia. You got this.— Official Wanda Sykes (@iamwandasykes) September 28, 2017
I've loved you since SNL, but need decades more, please. #KickCancersAss— Mark Hamill (@HamillHimself) September 28, 2017
❤️❤️❤️— Tatiana Maslany (@tatianamaslany) September 28, 2017
Julia, fuck. Will pray every day that this shit leaves you completely and quickly. Has no business being there. XoJ— Justine Bateman (@JustineBateman) September 28, 2017
Sending you so much love and light 🌟💛🌟💛🌟💛🌟💛🌟💛🌟💛🌟💛🌟💛— om (@oliviamunn) September 28, 2017
Sending you love and strength -— Patricia Arquette (@PattyArquette) September 28, 2017
❤️Sending every good wish ❤️— Mia Farrow (@MiaFarrow) September 29, 2017
Sending u all the love all the love all the love...— Mark Duplass (@MarkDuplass) September 28, 2017
Here's some more support from my heart to yours to help you kick it to the curb. Let it be so. Thanks for your voice to help others. ❤️— Michaela Watkins (@michaelaWat) September 29, 2017