No.
I suggest you re-consider about extension of your parents's B2 status if you want them visit you again in the future. I know some B2 visa applications were rejected because they extended in US before. It's pretty tough now.
I suggest you re-consider about extension of your parents's B2 status if you want them visit you again in the future. I know some B2 visa applications were rejected because they extended in US before. It's pretty tough now.