Here's a link to Guam's law regarding plastic bags:

2019
https://law.justia.com/codes/guam/2019/title-10/division-2/chapter-54/chapter-54b/

2020
https://law.justia.com/codes/guam/2020/title-10/division-2/chapter-54/chapter-54b/

2021
https://law.justia.com/codes/guam/2021/title-10/division-2/chapter-54/chapter-54b/