sure! Not an expert, but it's a law that allows the general public to request data, records, in this case emails, of the US Government, and if it doesn't fall under the one of the exemptions that it has to remain classified, the Government must provide. So, it looks like someone submitted and was granted a request for Fauci's emails from last year. I thought I read it was Buzzfeed, somewhere here, but don't quote me!