The warrant was unsealed and the feds were looking for (surprise!) porn, among other things. I'm not sure how that helps them, though. Child porn, yeah, is a crime in itself. But the article mentions that they were looking for porn that could be "used 'to sexually arouse or groom young males' for sex". I don't see how they can differentiate porn that would be used for that purpose and Bernie's personal stash. It seems to be a non-starter to me.