Legal Question in Constitutional Law in Massachusetts

There is none that I know of. You can file for modification. Speak to lawyer

You are choosing to file jointly with your husband.

One way around this would be for your husband to prepare a "dummy" return as though he were filing individually, and share that with his ex-spouse in order to meet the requirements of his divorce agreement. Once he did that, he could then go on to file jointly with you. I would need to review his divorce agreement to find out whether this would be permitted, or whether it would place him in contempt.

Another option would be to file for a modification.

The problem with your suggestion about the constitution and the court system is that the government is not forcing you to do this. Your husband voluntarily agreed to provide his tax information, and you are voluntarily agreeing to file your tax information jointly with him. As I see it, there is no redress with government, because this is the result of adults contracting with one another.

I strongly recommend that you retain counsel if you want to explore any of the above options I have outlined - there may be other options worth considering as well. Good luck!