You often hear that the Obama administration, whatever its other failings, has been “scandal-free.” Valerie Jarrett, the president’s closest adviser, has said he “prides himself on the fact that his administration hasn’t had a scandal and he hasn’t done something to embarrass himself.”

Even Trump adviser Peter Thiel seems to agree. When the New York Times’s Maureen Dowd observed during an interview that Mr. Obama’s administration was “without any ethical shadiness,” Mr. Thiel accepted the premise, saying: “But there’s a point where no corruption can be a bad thing. It can mean that things are too boring.”

In reality, Mr. Obama has presided over some of the worst scandals of any president in recent decades. Here’s a partial list:

• State Department email. In an effort to evade federal open-records laws, Mr. Obama’s first secretary of state set up a private server, which she used exclusively to conduct official business, including communications with the president and the transmission of classified material. A federal criminal investigation produced no charges, but FBI Director James Comey reported that the secretary and her colleagues “were extremely careless” in handling national secrets.

• Operation Fast and Furious. The Obama Justice Department lost track of thousands of guns it had allowed to pass into the hands of suspected smugglers, in the hope of tracing them to Mexican drug cartels. One of the guns was used in the fatal 2010 shooting of Border Patrol Agent Brian Terry. Congress held then-Attorney General Eric Holder in contempt when he refused to turn over documents about the operation.

• IRS abuses. Mr. Obama’s Internal Revenue Service did something Richard Nixon only dreamed of doing: It successfully targeted political opponents. The Justice Department then refused to enforce Congress’s contempt citation against the IRS’s Lois Lerner, who refused to answer questions about her agency’s misconduct.

• Benghazi. Ambassador Chris Stevens and three others were killed in the attack on a U.S. diplomatic compound in Libya. With less than two months to go before the 2012 election, the State Department falsely claimed the attack was not a terrorist attack but a reaction to an anti-Muslim film. Emails from the secretary later showed that she knew the attack was terrorism. Justice Department prosecutors even convinced a magistrate judge to jail the filmmaker.

• Hacking. Mr. Obama presided over the biggest data breach in the federal government’s history, at the Office of Personnel Management. The hack exposed the personnel files of millions of federal employees and may end up being used for everything from identity theft to blackmail and espionage. OPM Director Katherine Archuleta, the president’s former political director, had been warned repeatedly about security deficiencies but took no steps to fix them.

• Veterans Affairs. At least 40 U.S. veterans died waiting for appointments at a Phoenix VA facility, many of whom had been on a secret waiting list—part of an effort to conceal that between 1,400 and 1,600 veterans were forced to wait months for appointments. A 2014 internal VA audit found “57,436 newly enrolled veterans facing a minimum 90-day wait for medical care; 63,869 veterans who enrolled over the past decade requesting an appointment that never happened.” Even Mr. Obama admitted, in a November 2016 press conference, that “it was scandalous what happened”—though minutes earlier he boasted that “we will—knock on wood—leave this administration without significant scandal.”

All of these scandals were accompanied by a lack of transparency so severe that 47 of Mr. Obama’s 73 inspectors general signed an open letter in 2014 decrying the administration’s stonewalling of their investigations.

One reason for Mr. Obama’s penchant for secrecy is his habit of breaking rules—from not informing Congress of the dubious prisoner swap involving Sgt. Bowe Bergdahl and the Taliban, to violating restrictions on cash transfers to Iran as part of a hostage-release deal.

The president’s journalistic allies are happily echoing the “scandal-free” myth. Time’s Joe Klein claims Mr. Obama has had “absolutely no hint of scandal” in his presidency. The media’s failure to cover the Obama administration critically has been a scandal in itself—but at least the president can’t be blamed for that one.