Me and my husband just had a post nuptial agreement. My agreement is everything that he bought life insurance before and after our marriage either accident, term or family plan insurance for me that he is the beneficiary will be voided effective that date and in the future.

My question is they say some life insurance company depend on State where you at can supersede or override the post nuptial. So if that's the case the post nuptial that we agreed upon is nothing will be a waste. And if my husband bought insurance like family plan life/accident insurance again without my knowing he can still collect and claim his money if something happen to me. How true is that? Which is more powerful life insurance policy law or post nuptial agreement law. I'm from Michigan