There are many factors that go into the 601 waiver. It is very complex and best handled by an attorney if you want to succeed. Hire an attorney to look at all of your paper work and evaluate your case.
Alexus P. Sham firstname.lastname@example.org (917) 498-9009. The above information is only general in nature and does not constitute legal advice. It does not create an attorney-client relationship.
You are not likely to prevail any time soon. It may be 20 years before he can reenter the US.
The answer provided here is general in nature and does not take into account other factors that may need to be reviewed for a more precise answer. You should consult with an immigration attorney before taking any action. The answer here is not intended to create an attorney-client relationship.