Radar's revelation comes after the California Klan's Grand Dragon Will Quigg said he donated $20,000 to the Clinton campaign.

While Hillary points to Trump followers as "deplorables," she can't ignore the skeleton in her own family's closet! One Democratic Party insider said, "Hillary is the hater — and this will sink her." The source added, "She can't run from this scandal!"

Welch was a proud member of the Texas Klan before he died in 2006, Radar has learned. A warehouse worker with convictions for drug dealing and forgery, he was known to have said he was embarrassed to have Clinton as his relative!

Welch's maternal grandfather, Jeff Dwire, married Bill's widowed mother, Virginia, in 1969. That made Jeff's mom, Dianne, Bill's stepsister. However, Jeff never met his ex-president "uncle" or his "aunt" Hillary.

Welch joined the white supremacist group in November 1992 at a Klan rally in Vidor, Texas, protesting a federal court order to integrate public housing projects."I was right there carrying a Confederate flag," Welch boasted before he died.

"Carrying that flag in the KKK rally made me feel like I was 10 feet tall," Welch said.

Sen. Robert Byrd of West Virginia But Welch wasn't Hillary's only tie to the hateful group! In 2010, she publicly called Klansmanof West Virginia "my friend and mentor." Byrd previously said he joined the Klan at age 24, because he feared having to fight alongside "race mongrels" and with the "blackest specimen from the wilds" in World War II. Byrd helped establish the hate group's chapter in Sophia, West Va., and was elected as the chapter's "Exalted Cyclops."

But besides receiving political support from Klansman Byrd, Hillary has also received the hate group's ringing endorsement from Quigg!

"For the KKK, Hillary Clinton is our choice," Grand Dragon Quigg said. "A lot of people don't realize that." But shockingly, Hillary's been accused of secretly embracing the KKK's Jew-bashing rhetoric for decades. According to ENQUIRER reporter and former Clinton adviser Dick Morris, who is Jewish, she once yelled at him "Money! That's all you people care about!" during negotiations for his fee as an adviser in 1983.

What's more, in 1974 she called Paul Fray, the campaign manager for Bill's failed congressional run, a "f***ing Jew b*****d," according to reports.

Now, "Hillary's dirty racist linen has finally been exposed," an insider told Radar. "I wonder if she'll show up wearing it at a Klan rally?"