Me=F1 & My wife=H1B; how to sponsor my parents B2

[F1_student]

Hi,

I am a student on F1 visa and my wife is on H1B. How should I sponsor my parents B2 visa. Would the application be much stronger if my wife joins me in sponsoring them?

If so, How should the letter of support be worded?

Thank you in advance for the valuable information.

[orion]

Let HER alone sponsor.