They send a guard in tonight to murder him... and find him awake. They abort the attempt.
They send another guard in tomorrow morning to murder him... and find him awake. They abort the attempt.
They send another guard in tomorrow night to murder him... and find him awake. They abort the attempt.
They send another guard in the day after tomorrow in the morning to murder him... and find him awake. They abort the attempt.
They send another guard in the night after tomorrow to murder him... and find him awake. They abort the attempt.
Tate has won... or so we think.
Eventually he goes insane due to sleep deprivation and they release him, baffling everyone. He proceeds to totally discredit himself by doing some
Russian Sleep Experiment bullshit, his Iron Mind, which enabled him to thwart a hundred and a half assassination attempts has been his downfall.
The Matrix has won.