i would take the high road
he wants massive public attention. dont give him any
let USSS interview him in normal setting
walk away
then as he strolls along the so called beach looking for signs...have a rouge shark with laser beam BBQ him and leave a note in shells...or a giant hair ball
clapper and brennen should share his walk that day
or maybe he chokes on a piece of bread at dinner.
he is smug and knows he can work the system and lean over the line all day long, he thinks he a master gamesmen
give him all the rope he needs, karma is tough
or do a full on press to follow him everywhere, make him start believing he is seeing agents everywhere and that they are listening to his calls or house...go full on screw with him mode
hire some crisis actors to dress up and play "AM I AN FBI AGENT" just play games back 100 fold
have car shield call him every day every hour