Yet the CIA found no substantial foreign sources of money or influence. When Helms reported these findings to the President, the reaction was hostile. "LBJ simply could not believe that American youth would on their own be moved to riot in protest against U. S. foreign policy," Helms later wrote. Accordingly, Johnson instructed Helms to continue the search with increased diligence. The Nixon presidency later would act to extend the reach and scope of "Chaos" and like domestic surveillance activity. In 1969 intra-agency opposition to "Chaos" arose. Helms worked to finesse his critics. Lawrence Houston, the CIA general counsel, became involved, and Helms wrote an office memorandum to justify the "Chaos" operation to CIA officers and agents.