Not really. Being married to an EU/EEA citizen he’ll get a residence in any of the other ones. But having a full passport will cut down on paperwork in the long term.
Also, it’s nice here in Italy. Come over! The wife and I have been here for 7 years and once the bureaucracy is dealt with it’s (mostly) quite pleasant.
No, you see, Trump expects Europe to pull their own weight now. So Belgium will do the invading and then hand Greenland to the USA.