What financial benefits would a person have if,after getting divorced,he would pretend to still be married?

Meaning - if a person was to get divorced in another country and upon his return to the US after the divorce, without his ex-wife and child, he would keep the fact that he is divorced hidden from the law, what financial benefits, or any benefits, would this bring about? And what would happen to him if the truth would come out?|||He doesn't have to share the divorce with anybody except the IRS. If he files as married or with a child, he can be reported for tax fraud.|||Benefits are tax right offs. if he is still supporting them then he may get in a little trouble but he may be in titled to right them off. now if your talking about keeping up the rouge on the dating world, there are many benefits for him.