but you had leonid fresh never, anwar sadat, jim callahan and then margaret thatcher. some pretty hefty names in modern history. >> a notable person. >> and omar that' hose, maybe not of some of the same heft as some of the people i named, but somebody you had to deal with when figuring out how to settle the 100-year-old challenge of the panama canal. >> that was the most difficult political issue i ever faced. it was more difficult for me to get 67 votes to approve a very up popular -- unpopular treaty than it was to be elected president in the first place. >> really? >> yes. and i think that the vote of the senate -- it was the right vote -- was the most courageous act that any member of the congress has ever taken. just one quick statistic, of the 20 people who voted for the treaty in the senate in 1978, they were up for re-election that year. out of 20, only seven came back to the senate next january, and the attrition rate two years later in 1980 was with almost equal to that. but it was the right thing to do, and it alleviated tension that had been building up be