Are you supposed to bring your own bags to Sam's Club?

Excuse me, I was wondering if I am expected to bring my own bags when shopping at Sam's Club? I've heard some stores have policies requiring customers to use their own reusable bags for environmental reasons, and I just wanted to clarify if this is the case at Sam's Club as well. If not, do they provide bags for purchase at the checkout? Additionally, are there any discounts or incentives for customers who do bring their own bags? Thank you for your help.