Scott Wallace, a liberal millionaire candidate running for Congress in Pennsylvania, has given millions of dollars to so-called population control groups.

Such groups have advocated for taxing parents “to the hilt” for having more than two children, calling it “irresponsible breeding,” and said abortion is “a highly effective weapon” to combat overpopulation.

Wallace, grandson of a former vice president who’s running as a Democrat in Pennsylvania's 1st Congressional District against Republican incumbent Rep. Brian Fitzpatrick, has been in charge of the the Wallace Global Fund "for the last two decades" that gave out nearly $7 million to population control groups since 1997.

Zero Population Growth (ZPG) was among the organizations that received the money from the fund. According to public records, it received $420,000 between 1997 and 2003.

“No responsible family should have more than two children.” — Zero Population Growth, a group that received funding from Scott Wallace.

The group, shortly after being founded in 1968, released a brochure advocating abortion to stabilize population growth and claimed that “no responsible family should have more than two children.” To deal with larger families, it also called for families to be “taxed to the hilt” for “irresponsible breeding.”

It also blamed the overpopulation on the “white middle-class” that “use up more than their share of resources and do more than their share of polluting” and urged them to “voluntarily limit their families to two children.”

Paul Ehrlich, who co-founded the ZPG, once called abortion “a highly effective weapon in the armory of population control.” The goal of the organization, which changed its name to Population Connection in 2002, has remained the same since its inception, arguing that the world needs to contain population growth with particular emphasis on American families.

The organization’s political arm, Population Connection Action Fund, publicly endorsed Wallace for Congress, saying his support for their cause is “exactly the kind of dedication we need in Congress.”

Wallace’s fund also gave $20,000 in 2010 to the Center for the Advancement of the Steady State Economy (CASSE), a group that sees the economic growth as undesirable and instead supports an economy with “stable or mildly fluctuating levels” and a society where birth rates equal death rates.

The organization openly supports zero population growth and its executive board member, Herman Daly, advocated issuing reproduction licenses, allowing women to have only two children, unless they buy the license for more children from other women. Daly called it the “best plan yet offered” to limit population growth.

"Former Co-Chair Scott Wallace is proud of the work of grantees like Planned Parenthood in empowering women and protecting reproductive rights and will stand up for Pennsylvania women." — Scott Wallace's campaign communications director Zoe Wilson-Meyer

Zoe Wilson-Meyer, communications director for Wallace’s campaign, didn’t answer Fox News’ questions on whether Wallace still supports the ideas expressed by the groups.

“The Wallace Global Fund has for decades been a leader in helping women gain access to family planning. Former Co-Chair Scott Wallace is proud of the work of grantees like Planned Parenthood in empowering women and protecting reproductive rights and will stand up for Pennsylvania women,” she said in an email.

“In Washington, Brian Fitzpatrick voted to defund Planned Parenthood and supports Donald Trump’s effort to take away a woman’s right to choose,” she added.

The revelations of the foundation’s donations come as Wallace faces continuing criticism over past funding activities. The foundation reportedly donated hundreds of thousands of dollars to anti-Israel groups that support a boycott of the Jewish State. Local Democratic groups in the state expressed deep concern about the donations, but have since endorsed Wallace after he renounced the donations made in the name of his family’s fund.

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Fox News previously reported that Wallace was also a key financier of the Center for Constitutional Rights’ efforts to represent alleged terrorists in the Guantanamo Bay just after the Sept. 11, 2001, terror attacks.

“Just after 9/11 many were afraid of the work the Center was doing,” Vince Warren, executive director of the group, told Wallace’s alma mater’s Haverford Magazine in 2009, adding that funding the center’s work was difficult. “And yet H. Scott Wallace ’73 of the Wallace Global Fund, stepped up and helped.”

The race in Pennsylvania's 1st Congressional District is among the most high-stakes election in the country in the upcoming midterms. The Democratic Congressional Campaign Committee (DCCC) added Wallace’s candidacy to its “Red to Blue” program aimed at flipping the district.