Democratic presidential candidate Hillary Clinton is scheduled to host a fundraiser this weekend with key members of a pro-Tehran lobbying outfit that is working to kill new anti-terrorism laws that would prevent Iranians from travelling to the United States without first obtaining a visa permit.

Clinton is scheduled to travel to Silicon Valley this weekend for three fundraisers with wealthy tech moguls, many of which have expressed skepticism about the candidate.

Clinton will participate in a Menlo Park fundraiser on Sunday hosted by Twitter executive Omid Kordestani and his wife Gisel Hiscock, as well as National Iranian American Council (NIAC) board member Lily Sarafan and Noosheen Hashemi, who serves on the board of the pro-Iran advocacy group Ploughshares, a major funder of pro-Iran efforts.

NIAC, an advocacy group formed by Iranian-Americans to work against the pro-Israel community, has long been accused of lobbying on Iran’s behalf against sanctions and other measures that could harm the Islamic Republic’s interest.

Ploughshares, which partners with NIAC, is joining the White House in efforts to pressure the Jewish community and others to back the recently implemented Iran nuclear agreement, the Free Beacon reported.

The organization has also spent millions to influence coverage of Iran and protect the Obama administration’s diplomatic relations with Iran.

NIAC has emerged a key pro-Iran player in the United States, working with the White House and liberal groups to spin the deal as a positive for U.S. national security.

The group is currently leading the charge to block recent counter-terrorism legislation that would require individuals who have travelled to Iran to obtain a visa before entering the United States.

Congress passed the legislation in response to recent disclosures exposing flaws in the U.S. visa waiver program, which eases travel to the U.S. with 38 partner countries.

Lawmakers said the legislation is meant to ensure that individuals with potential ties to terrorism will be detected before entering the United States.

The White House has threatened to waive these new anti-terror provisions pertaining to Iran in order to preserve diplomatic relations with the country. Secretary of State John Kerry wrote to Iranian leaders in January promising to block the new law.

NIAC is now spearheading an advocacy campaign aimed at petitioning lawmakers to reverse the counter-terror law.

Clinton’s efforts to raise money alongside these pro-Iran advocates drew criticism from opposition groups.

"This is why no one trusts Hillary Clinton," said Ian Prior, communications director for American Crossroads, a conservative advocacy group. "With fingers crossed behind her back, she tells voters she would be tough on Iran. Then she turns around and takes money from pro-Tehran lobbyists that pushed for the dangerous Iran nuclear deal that Hillary so vehemently supports."

Neither NIAC, nor Ploughshares, nor the Clinton campaign immediately returned a request for comment.