With the Biden administration now reportedly delaying federal rules forcing businesses to reveal their carbon emissions, industry groups are flocking to another forum to fight the key climate transparency measure: Sacramento, where state legislators are preparing to vote on a far-reaching measure to combat corporate greenwashing.

The California bill would require companies to disclose how much they contribute to climate change each year — including not only their direct emissions, which many companies now report annually, but also the largely hidden indirect emissions involved in the production and consumption of their goods. The proposal covers all large companies doing business in the state, and since California’s economy is on the brink of becoming the fourth-largest in the world, it would effectively become national policy.

The bill has drawn predictable opposition from oil and gas interests, but they’re not the only ones. Private equity and restaurant lobbying groups are also fighting the plan, as are major corporations like Meta Platforms, Wells Fargo, and beloved California burger chain In-N-Out Burger — all of which could end up looking a lot less sustainable than they currently claim if they’re forced to fully account for their contributions to climate change. Food systems, for example, likely account for more than a third of global emissions, according to one recent study.