After the C.I.A. inspector general’s report on prisoner interrogation was released last week, former Vice President Dick Cheney settled into his usual seat on Fox News to express his outrage  not at the illegal and immoral behavior laid out in the report, of course, but at the idea that anyone would object to torturing prisoners. He was especially vexed that the Obama administration was beginning an investigation.

In Mr. Cheney’s view, it is not just those who followed orders and stuck to the interrogation rules set down by President George Bush’s Justice Department who should be sheltered from accountability. He said he also had no problem with those who disobeyed their orders and exceeded the guidelines.

It’s easy to understand Mr. Cheney’s aversion to the investigation that Attorney General Eric Holder ordered last week. On Fox, Mr. Cheney said it was hard to imagine it stopping with the interrogators. He’s right.

The government owes Americans a full investigation into the orders to approve torture, abuse and illegal, secret detention, as well as the twisted legal briefs that justified those policies. Congress and the White House also need to look into illegal wiretapping and the practice of sending prisoners to other countries to be tortured.