Say what you will about President Harry Truman, but at least he didn't leave the White House a suspiciously rich man. He also actually went home, to Independence Missouri, and moved into a modest house he didn't own. It was the same house belonging to his wife's family where he had lived with Bess (and his mother-in-law!) decades earlier.

Flat broke, and unwilling to accept corporate board positions or commercial endorsements, Truman sought a much-needed loan from a local Missouri bank. For several years his sole income was a $113 monthly Army pension, and only the sale of a parcel of land he inherited with his siblings prevented him from nearly "being on relief," as Truman allegedly stated. In the 1950s, perhaps almost entirely to alleviate Truman's embarrassing financial situation, Congress authorized a $25,000 yearly pension for ex-presidents Truman and the much-wealthier Herbert Hoover.

Contrast this with the luxe post-presidential life of the Reagans in Bel Air, or the still-unfolding saga of the Obama's jet-setting life between Kalorama, Palm Springs, and Oahu!

But even if Truman's homespun honesty and common man persona sometime wore thin, he deserves enormous credit for the startling admission that he regretted creating the CIA. Speaking to a biographer in the 1960s, less than 20 years after signing the National Security Act of 1947, Truman expressed a sense of foreboding about what the agency had become, and would become:

Merle Miller: Mr. President, I know that you were responsible as President for setting up the CIA. How do you feel about it now?
Truman: I think it was a mistake. And if I'd know what was going to happen, I never would have done it.

This is decidedly not the kind of thing ex-presidents usually say. We won't expect George W. Bush to announce his regrets over invading Iraq anytime soon. But Truman's instincts were right, even if he couldn't have imagined what the CIA and the entire Deep State nexus would become. In Truman's era, spying and subterfuge were physical endeavors, involving skilled agents and analog technology. Today the covert arts don't require James Bond, but instead a trained technician who can pull information from a server farm.

The digital revolution gives modern intelligence agencies vastly more power than they had during the Cold War spy days: they simply access existing metadata, from whatever source, rather than collect it in real time. And intelligence gathering is not just a supplementary form of warfare waged against hostile foreign governments, but also a domestic political tool that allows Deep State actors to strike at civilian and political targets. As Mr. Trump has discovered, the "strike" can consist of a coordinated media attacks, leaks from trusted officials, and even bizarre triangulations aimed at pinning his election on Vladimir Putin.