At first glance, the USA Today headline seemed like many others in the nearly two years since Edward Snowden’s explosive revelations: U.S. secretly tracked billions of calls for decades. And while the program essentials were the same—the secret collection of the telephone metadata of every American– there were two key differences between this story and the hundreds before it on this topic. The offending government entity was the Drug Enforcement Administration, and the warrantless surveillance program was launched during the first Bush administration.

Justice Department officials told Reuters that, “All of the information has been deleted.”  “The agency is no longer collecting bulk telephony metadata from U.S. service providers.” However, DoJ provided no actual proof of the alleged data destruction, and the DoJ Inspector General only recently began an inquiry into the program. While it now seems fairly clear that the DEA’s “USTO” metadata collection program served as a model for the NSA telephony metadata program conducted under Sec. 215 of the PATRIOT Act, what is also clear is that Americans are now confronting a government surveillance apparatus that is truly vast. As Ryan Gallagher of The Intercept noted, this particular DEA mass surveillance program is just one of several undertaken by the agency over the past three decades.

How many other such programs exist at other federal agencies, whether inside or outside of the U.S. intelligence community? And how far back do such programs go? How many members of Congress knew, and for how long? Was this DEA program concealed from the agency’s inspector general for two decades, or did the IG simply fail to investigate the program year after year out of apathy or indifference?

If the past is any guide at all—and the surveillance scandals of the 1960s and 1970s are a very good guide—we are once again confronting a level of government over-reach that calls for a comprehensive, public accounting.

In is new book, Democracy in the Dark, former Church Committee chief counsel Fritz Schwartz notes that “…too much is kept secret not to protect America but to keep illegal or embarrassing conduct from Americans…the Church Committee also found that every president from Franklin Roosevelt to Richard Nixon had secretly abused their powers.” For the paperback edition of his book, Schwartz is going to have to add more American chief executives to his list.