Hackman was also in another movie about spying and paranoia - The Conversation. Great movie. I know it’s not about nation states spying but wanted to add that here
Hackman played the same character in both movies. His character in enemy of the state has some deliberate references (the raincoat, the workshop, the opening sequence).
Francis Ford Coppola said that “The Conversation” was his favourite Francis Ford Coppola movie.
Watching “Enemy of the State,” it is quite clear that Hackman’s character is a nod at The Conversation’s Harry Caul. He plays an ex-spook who is extremely paranoid about surveillance, which is the exact state Caul gets into at the end of The Conversation!