Superboy and the Legion of Super-Heroes (1977-) #238

When the new United Planets President outlaws the Legion, some are sent to the Takron-Galtos prison planet, some are imprisoned on Earth and the rest go underground. The Legionnaires who went underground break out the Legionnaires imprisoned on Earth. The Legionnaires on Earth uncover the President's scheme and expose him as the mind-controlling Universo.