There will be a hearing tomorrow morning (Tuesday) at 9am (you need to sign up an hour or more in advance) on HB 1458, a bill that would require the state building code council to include embodied carbon in the building code and set reduction targets for the next 2 code cycles.
You can join via the link at the bottom of this or submit written comments:
https://app.leg.wa.gov/billsummary?BillNumber=1458&Year=2025&Initiative=false
-Kjell