it was up to the surgeon general, at the height of the mccarthy era in 1949 to decide whether jonas salk, and unknown young researcher, should be giving a security clearance. it was a close call. they did a second investigation. salk never knew about this. salk was cleared by the skin of his teeth. had he not been cleared, he clearly would have been dropped by the march of dimes, which was extremely image-conscious. jonas salk would have been out of the vaccine business. there are all kinds of detours in this story. indeed, in 1955, as ike is inviting jonas salk to the white house amidst this enormous pomp and circumstance, there is one isolated letter from j edgar hoover saying, "i wouldn't invite to that commie here." [laughter] some have a very long memories when it came to this. once the vaccine came out in 1956 with a couple of stumbles, the rate of polio dropped dramatically. albert sabin, who was working on his live polio vaccine, was forced to go to the soviet union in the midst of the cold war to test his vaccine. so many kids in america already had the salk vaccine. sabin loved