Clearly you need to hire a lawyer.
If you are low income go here: www.justice.gov/eoir/probono/states.htm or http://www.immigrationlawhelp.org/
PROFESSOR OF IMMIGRATION LAW for over 10 years -- This blog posting is offered for informational purposes only. It does not constitute an attorney-client relationship. Also, keep in mind that this is an INTERNET BLOG. You should not rely on anything you read here to make decisions which impact on your life. Meet with an attorney, via Skype, or in person, to obtain competent personal and professional guidance.
More information is needed. You absolutely need to hire an attorney for the misrepresentation waiver, or to help you argue why it was not misrepresentation.
Dhenu Savla, Esq.
This answer does not create an attorney-client relationship and is not meant to be relied upon as legal advice.
The best advice is to hire a lawyer. You may have been able to avoid the necessity of a waiver if your case had been properly documented from the start.
Samuel Ouya Maina, Esq. 415.391.6612 email@example.com Law Offices of S. Ouya Maina, PC 332 Pine Street, Suite 707 San Francisco, CA 94104
Hardship to your spouse may include medical, financial, psychological, it really depends on your personal circumstances. It is very advisable to get a lawyer to do this, it will not suffice to say "I"m so sorry about my fraud I will never do it again".
The above is intended only as general information, and does not constitute legal advice. You must speak with an attorney to discuss your individual case.