Billie Eilish, Finneas, Maroon 5, Brittany Howard and more artists are banding together to push Congress to support President Biden’s “Build Back Better” bill in support of strong climate provisions.

On Wednesday, the stars will enable their millions of fans to take action by launching a massive social media campaign by posting images of a large red exclamation point, alternating with scenes of extreme weather conditions, while using the hashtags #CodeRedClimate and #CodeRedCongress. The campaign will include a link to a page where fans can email their local representatives and push support for the largest climate protection bill in American history. During the week of Sept. 27, Congress will vote on the bill that outlines how to get the country to 80% pollution-free electricity by 2030; provide tax incentives for solar, wind, energy-efficiency, electric cars, charging stations, and more; and cut subsidies for fossil fuels.

The “Build Back Better” bill also plans to drive major investment into communities disproportionately hit by environmental injustice.

Other artists and actors participating in the #CodeRedClimate campaign include: Jon Batiste, Public Enemy’s Chuck D, Dave Matthews Band, Alec Benjamin, Melissa Etheridge, Kurtis Blow, Dead & Company, Leonardo DiCaprio, Jane Fonda, Mark Ruffalo, Damian and Stephen Marley, GROUPLOVE, Huey Lewis and The News, among many others.

Additionally, the National Independent Talent Organization (NITO) is reaching out to its members to participate.

If the “Build Back Better” bill passes, President Biden can enter global climate negotiations on Nov. 1 with America setting out to cut climate pollution 100% by 2050 and encouraging other major nations to act accordingly.

Musician Annie Farman, Superfly and Bonnaroo/Outside Lands festivals co-founder Rick Farman, Adam Gardner and Tanner Watt of the environmental music nonprofit REVERB, and Global Citizen are also among those organizing the #CodeRed campaign. Global Citizen’s 24-hour series of concerts on Sept. 25 will also shine a spotlight on the initiative.