This is rather asinine

 So... I personally would not announce this.

Look, the USA does not have an Ambassador to Italy. And hasn't had one for 18 months since Biden was elected. The local Italian Chargé d'Affaires has been representing the US since Jan 4, 2021. In fact, in these past 18 months even the Chargé d'Affaires has been replaced by a new one. 

As for the "not important" argument... Italy has just elected a self-proclaimed semi-fascist Prime Minister. 

This is not a great place to be. 

So to have the administration promote an Ambassador for Plants and Animals seems particularly tone deaf.