The liberal Americans for Tax Fairness (ATF) group will roll out a website on Wednesday to make the case that President Trump’s proposed tax cuts for wealthy people and corporations would hurt working families.

The website, stoptrumptaxcuts.org, compares the cost of various aspects of the tax plan the White House released in April to similarly sized proposed cuts in Trump’s fiscal 2018 budget proposal.

For example, the site says that Trump’s budget proposes $4.3 trillion in cuts over 10 years to services including Social Security, Medicaid and education, while his tax cuts could cost $4.8 trillion.

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ATF is a coalition of liberal groups that wants wealthy people and corporations to pay their “fair share” of taxes. Members of the coalition include the AFL-CIO, Daily Kos, the Leadership Conference on Civil and Human Rights and MomsRising.

ATF Executive Director Frank Clemente said that the group decided to launch the site to educate the public about how tax cuts for the rich could jeopardize programs that people value.

“Our mission here to make sure the public understands that this is a zero-sum game,” Clemente said in an interview with The Hill.

Stoptrumptaxcuts.org includes graphics that can be shared on social media, as well as materials that people can use to help argue against tax cuts for the wealthy when meeting with their lawmakers and holding protests and rallies.

“This website should help everyone see clearly what is at stake for them and their families in this tax and budget fight and what they can do to make their voices heard,” said Vanita Gupta, president and CEO of the Leadership Conference on Civil and Human Rights.

The website’s launch comes as Republicans are expected to focus on tax reform in the fall, following the Senate’s failure to pass legislation repealing ObamaCare.

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Liberals are stepping up their efforts to argue against tax cuts for wealthy individuals and corporations. ATF and other progressive organizations launched a campaign earlier this month called “Not One Penny." The program is focused on opposing lower taxes for the rich.

Republicans are still drafting tax legislation, and key players in the GOP’s tax effort have pushed back on the idea that the bill will add to the deficit and benefit the wealthy.

Some key Republicans have said that they intend for tax cuts to be paid for by eliminating tax breaks for special interests and through increased economic growth. Treasury Secretary Steven Mnuchin Steven Terner MnuchinLawmakers fear voter backlash over failure to reach COVID-19 relief deal United Airlines, unions call for six-month extension of government aid House Democrats plan to unveil bill next week to avert shutdown MORE said late last month that most people in the top tax bracket would not receive a tax cut.

But Clemente said that, instead of tax reform, Republicans are proposing “tax giveaways.”