you can't really stop your husband from violating the tax laws. if what you say is true you can file for 3949-A with the IRS.
https://www.irs.gov/pub/irs-pdf/f3949a.pdf
also, you maybe should file for innocent spouse relief.
see this webpage
https://www.supermoney.com/innocent-spouse-relief/#:~:text=There%20are%20three%20ways%20to%20file%20...
