Yet another scandal is set to dog Democratic presidential nominee Hillary Clinton as she heads full-throttle into campaign mode for the November election.

Just as the waves concerning her use of a private email server during her tenure as secretary of state began to die down, WikiLeaks published roughly 20,000 emails from Democratic National Committee officials that implicated the DNC in markedly favoring Clinton over Vermont Sen. Bernie Sanders during the primaries.

“Public corruption undermines the integrity of representative government and institutions associated with elected or public officials,” the letter read.

But on the heels of these email-related scandals comes a new hurdle for the Clinton campaign to handle: The IRS referred congressional charges for investigation against the Clinton Foundation to the tax agency’s exempt operations office last week.

Sixty-four House Republicans wrote a letter dated July 15 that requested the IRS, the FBI, and the Federal Trade Commission investigate the foundation run by Bill, Hillary and Chelsea Clinton. In the letter, the members of Congress called into question the foundation’s “issues of public corruption” pertaining to its initial tax-exempt filings. With its 501(c)(3) status, the foundation’s original philanthropic intentions have been undermined by its current activities, the House Republicans claimed.

The Congress members highlighted inconsistencies with the Clinton Foundation’s initial tax-exempt status filing, Russian company Uranium One’s unreported donations to the foundation in a “Pay to Play” pattern, and the Clintons’ connections with Laureate International Universities, a for-profit education company.

“I don’t know if it would be a super PAC or a for-profit entity,” Tennessee Rep. Marsha Blackburn, the letter’s circulator, told FoxNews.com. “There sure is a lot of money going through there and it seems the contributions would touch on Bill Clinton, Hillary Clinton, and the Clinton Foundation. It is a hub of some kind of activity and let’s leave it to the IRS, the FBI, and the FTC to discern exactly what that is.”

The House members also claimed that the Clinton Foundation’s “activities cannot be ignored given the compelling public interest involved.”

[lz_related_box id=”166228″]

“The foundation has routinely gone behind its pledge to act in furtherance of charitable causes and beyond that scope of activities indicated in its initial filings with the IRS,” the letter stated. “Public corruption undermines the integrity of representative government and institutions associated with elected or public officials. However, the failure of government agencies to independently assess and investigate the validity of such allegations can have an even more damaging effect. We ask that each of your agencies review these allegations pursuant to your jurisdictional charge.”

Blackburn also blasted the IRS for what she sees as a double standard in who and what they choose to investigate, saying that “they would go after conservative groups and religious groups and organizations, but they wouldn’t be looking at the Clinton Foundation for years,” according to The Daily Caller. “It was as if they choose who they are going to audit and question. It’s not right.”

Who do you think would win the Presidency?

By completing the poll, you agree to receive emails from LifeZette, occasional offers from our partners and that you've read and agree to our privacy policy and legal statement.

Blackburn added, “In my opinion, there’s a lack of good governance, there is the appearance of conflicts of interest, and there are continued questions about the financial dealings.”

In response to the House Republicans’ letter, IRS Commissioner John Koskinen wrote his own letter dated on July 22 in which he said, “We have forwarded the information you have submitted to our Exempt Organizations Program in Dallas.”

So this investigation is just one more bothersome scandal that Clinton can add to her ever-growing list — even as she seeks to bolster Americans’ trust in her and reverse her trend of dropping percentage points in polls pitting her against Republican nominee Donald Trump.