If he was active during Ike's presidency, then he's very likely retired now -- it's been 45 years. His career now is probably writing alien-adventure stories and appearing on talk shows.

There may be many reasons for his doing this. My bet is money.

Fred

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"For shame, gentlemen, pack your evidence a little better against another time."
-- John Dryden, "The Vindication of The Duke of Guise" 1684