thought that the russians might be behind it or cuba might be behind it. johnson sees there's a real danger in that. you want to put these rumors to rest. >> investigations into all the facts of these last four days may not be limited to the state of texas or the fbi. some congressmen already have suggested a congressional investigation. >> killing a president wasn't a federal crime at the time. so you had the federal government intervening in still what was a local murder. there certainly was a concern of competing investigations. there was the dallas criminal investigation. there was the state of texas court of inquiry and there were committees on both sides of congress, while, of course the fbi had been given the job to conduct a full-scale investigation. >> johnson realizes something has to be done. he realizes that he has to appoint a body that the public will respect to look into this. >> yes, mr. president.