Within hours of the disclosure that federal authorities routinely collect data on phone calls Americans make, regardless of whether they have any bearing on a counterterrorism investigation, the Obama administration issued the same platitude it has offered every time President Obama has been caught overreaching in the use of his powers: Terrorists are a real menace and you should just trust us to deal with them because we have internal mechanisms (that we are not going to tell you about) to make sure we do not violate your rights.

Those reassurances have never been persuasive — whether on secret warrants to scoop up a news agency’s phone records or secret orders to kill an American suspected of terrorism — especially coming from a president who once promised transparency and accountability.

The administration has now lost all credibility on this issue. Mr. Obama is proving the truism that the executive branch will use any power it is given and very likely abuse it. That is one reason we have long argued that the Patriot Act, enacted in the heat of fear after the Sept. 11, 2001, attacks by members of Congress who mostly had not even read it, was reckless in its assignment of unnecessary and overbroad surveillance powers.

Based on an article in The Guardian published Wednesday night, we now know that the Federal Bureau of Investigation and the National Security Agency used the Patriot Act to obtain a secret warrant to compel Verizon’s business services division to turn over data on every single call that went through its system. We know that this particular order was a routine extension of surveillance that has been going on for years, and it seems very likely that it extends beyond Verizon’s business division. There is every reason to believe the federal government has been collecting every bit of information about every American’s phone calls except the words actually exchanged in those calls.