The U.S. federal government has had a number of efforts around sustainable procurement, and it's a feature of all the directives to federal agencies around sustainability. There's sort of a general code, the federal acquisition regulation out of the General Services Administration, in which things like bio-based preferential products, recycled content and a number of other things are reflected.
The second is around electronics stewardship. The federal government, as you can imagine, buys many computers and other things, so it works with the electronics suppliers to ensure that there's take-back and other things.
Finally, a more recent requirement is around disclosure in the supply chain of carbon emissions. For example, the General Services Administration requires a number of its large suppliers to report their greenhouse gas emissions through the Carbon Disclosure Project supply chain initiative, so there are some opportunities there to report and reduce greenhouse gas emissions in the supply chain.