This is a better read than Andrew's authorized history of British intelligence. Here, presumably, there was no censor standing over his shoulder nor was there any need to appear to be thorough.
Contrary to the title, this is not a history of intelligence through the presidencies. Washington is covered. Lincoln is briefly mentioned. Wilson is treated at some length. The focus, however, is on the presidencies of FDR, Truman, Eisenhower, Kennedy, Johnson, Nixon, Ford, Carter, Reagan and Bush--from the thirties into the nineties. Although counterintelligence, i.e. the FBI, gets some treatment, the real attention is given to C.I.A. and the N.S.A.
While author Andrew sees spying as necessary, even beneficial, he is less sanguine about black-operations such as US assassination attempts and coup attempts. This is not, for him, primarily a moral position. As he presents the history of such things, they simply don't pay off very well.