Will Obama be remembered as the Snooper President?

The President is caught riding rough-shod over privacy for the second time in a month.

This is a bad one. At 7:05PM last night, the Guardian published this story, that the National Security Administration had, using a top secret court order, been collecting all of the phone data from Verizon, one of America's biggest phone networks. Not just some of the data; not just of certain individuals under specific investigation: all of it. Every single customer.

It seems Obama will be remembered as the Snooper President. This story comes at the worst possible time for him, struggling as he already is to drag his second term free of the scandals in which it has been mired. Not only that, this is the second government department in less than a month shown to have been wildly overzealous in taking phone records: the Justice Department was caught subpoenaing the same data from Associated Press journalists just a few weeks ago.

The leaked document obtained by the Guardian's Glenn Greenwald, which is marked Top Secret, instructs the phone company to produce “all call detail records or 'telephony metadata'” for all communications operated by Verizon within the US, and from the US to other countries, and then continue to produce it, ongoing, for the three month duration of the order.

What is being collected isn't call content – this isn't a wire-tapping operation – but metadata; when a call is made, and to whom, and for how long. James Ball at the Guardian gives a good run-down of what this means here.

In essence what this scandal means is that the Obama-era NSA has simply continued Bush-era tactics. In an eerily similar scandal in 2005, a whistleblower revealed that the NSA had been intercepting telephone records wholesale from AT&T, another telecommunications giant, with the same sort of injunction; which implies that Verizon probably isn't the only network whose records are being obtained by the government – though it is the only network implicated in this particular leak.

Of course, the President usually doesn't personally sign off on these things. But that there have been so many violations on his watch hints troublingly of a White House culture that sets a low premium on privacy.

There is a defence to all this, of course. You and I do not work in the Oval Office. We do not know the dangers the US may face, and we do not know how many lives have been saved in exchange for this privacy. It is the NSA's job to keep people safe, and if it feels it can track terrorists by correlating certain patterns of phone behaviour, then perhaps there is an argument that they are right to do so. Perhaps it is worth it.

But citizens were not given any choice in the matter. This – like the AP subpoena – happened in secret, “Top Secret” in this case. Maybe privacy had to be overridden, and maybe it had to be in secret, for the greater good. But this presidency – this President – wasn't supposed to operate like this.

(It is not just the administration at fault here, it has to be said. MSNBC's Adam Serwer astutely pointed out that Congress has twice had the opportunity to vote on amendments that would at least partially to lift the lid on NSA secret surveillance, and twice voted against it.)

Further worrying questions are raised by this issue too, perhaps most haunting of which is: could the secret court order as used by the NSA to requisition data from Verizon – and simultaneously gag them – be used for, say, Facebook data? Or Google data? The NSA is an incredibly secretive organisation; the truth is, we don't know what they are able to do until, like yesterday, it leaks out.

I'll end with a quote from a crucial campaign speech Obama made in August 2007, entitled “The War We Need To Win.” In this speech, the ambitious upstart Senator set out his policy stall for the Democratic nomination for the presidency. With a directness that his oratory has lacked of late, Obama eviscerated the Bush administration's policies for riding roughshod over privacy protections in the name of national security.

This Administration also puts forward a false choice between the liberties we cherish and the security we demand. I will provide our intelligence and law enforcement agencies with the tools they need to track and take out the terrorists without undermining our Constitution and our freedom. No more national security letters to spy on citizens who are not suspected of a crime. No more tracking citizens who do nothing more than protest a misguided war. No more ignoring the law when it is inconvenient. That is not who we are. And it is not what is necessary to defeat the terrorists. The FISA court works. The separation of powers works. Our Constitution works. We will again set an example for the world that the law is not subject to the whims of stubborn rulers, and that justice is not arbitrary.

Obama, back in 2007, talking about Bush, concluded: “This Administration acts like violating civil liberties is the way to enhance our security. It is not.”

In the six years since that speech was given, nothing seems to have changed.

The NSA headquarters at Fort Meade. Photograph: Getty Images

Nicky Woolf is reporting for the New Statesman from the US. He tweets @NickyWoolf.

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Inside Big Ben: why the world’s most famous clock will soon lose its bong

Every now and then, even the most famous of clocks need a bit of care.

London is soon going to lose one of its most familiar sounds when the world-famous Big Ben falls silent for repairs. The “bonging” chimes that have marked the passing of time for Londoners since 1859 will fall silent for months beginning in 2017 as part of a three-year £29m conservation project.

Of course, “Big Ben” is the nickname of the Great Bell and the bell itself is not in bad shape – even though it does have a huge crack in it.

The bell weighs nearly 14 tonnes and it cracked in 1859 when it was first bonged with a hammer that was way too heavy.

The crack was never repaired. Instead the bell was rotated one eighth of a turn and a lighter (200kg) hammer was installed. The cracked bell has a characteristic sound which we have all grown to love.

Big Ben strikes. UK Parliament.

Instead, it is the Elizabeth Tower (1859) and the clock mechanism (1854), designed by Denison and Airy, that need attention.

Any building or machine needs regular maintenance – we paint our doors and windows when they need it and we repair or replace our cars quite routinely. It is convenient to choose a day when we’re out of the house to paint the doors, or when we don’t need the car to repair the brakes. But a clock just doesn’t stop – especially not a clock as iconic as the Great Clock at the Palace of Westminster.

Repairs to the tower are long overdue. There is corrosion damage to the cast iron roof and to the belfry structure which keeps the bells in place. There is water damage to the masonry and condensation problems will be addressed, too. There are plumbing and electrical works to be done for a lift to be installed in one of the ventilation shafts, toilet facilities and the fitting of low-energy lighting.

Marvel of engineering

The clock mechanism itself is remarkable. In its 162-year history it has only had one major breakdown. In 1976 the speed regulator for the chimes broke and the mechanism sped up to destruction. The resulting damage took months to repair.

The weights that drive the clock are, like the bells and hammers, unimaginably huge. The “drive train” that keeps the pendulum swinging and that turns the hands is driven by a weight of about 100kg. Two other weights that ring the bells are each over a tonne. If any of these weights falls out of control (as in the 1976 incident), they could do a lot of damage.

The pendulum suspension spring is especially critical because it holds up the huge pendulum bob which weighs 321kg. The swinging pendulum releases the “escapement” every two seconds which then turns the hands on the clock’s four faces. If you look very closely, you will see that the minute hand doesn’t move smoothly but it sits still most of the time, only moving on each tick by 1.5cm.

The pendulum swings back and forth 21,600 times a day. That’s nearly 8m times a year, bending the pendulum spring. Like any metal, it has the potential to suffer from fatigue. The pendulum needs to be lifted out of the clock so that the spring can be closely inspected.

The clock derives its remarkable accuracy in part from the temperature compensation which is built into the construction of the pendulum. This was yet another of John Harrison’s genius ideas (you probably know him from longitude fame). He came up with the solution of using metals of differing temperature expansion coefficient so that the pendulum doesn’t change in length as the temperature changes with the seasons.

In the Westminster clock, the pendulum shaft is made of concentric tubes of steel and zinc. A similar construction is described for the clock in Trinity College Cambridge and near perfect temperature compensation can be achieved. But zinc is a ductile metal and the tube deforms with time under the heavy load of the 321kg pendulum bob. This “creeping” will cause the temperature compensation to jam up and become less effective.

So stopping the clock will also be a good opportunity to dismantle the pendulum completely and to check that the zinc tube is sliding freely. This in itself is a few days' work.

What makes it tick

But the truly clever bit of this clock is the escapement. All clocks have one - it’s what makes the clock tick, quite literally. Denison developed his new gravity escapement especially for the Westminster clock. It decouples the driving force of the falling weight from the periodic force that maintains the motion of the pendulum. To this day, the best tower clocks in England use the gravity escapement leading to remarkable accuracy – better even than that of your quartz crystal wrist watch.

In Denison’s gravity escapement, the “tick” is the impact of the “legs” of the escapement colliding with hardened steel seats. Each collision causes microscopic damage which, accumulated over millions of collisions per year, causes wear and tear affecting the accuracy of the clock. It is impossible to inspect the escapement without stopping the clock. Part of the maintenance proposed during this stoppage is a thorough overhaul of the escapement and the other workings of the clock.

The Westminster clock is a remarkable icon for London and for England. For more than 150 years it has reminded us of each hour, tirelessly. That’s what I love about clocks – they seem to carry on without a fuss. But every now and then even the most famous of clocks need a bit of care. After this period of pampering, “Big Ben” ought to be set for another 100 or so years of trouble-free running.

The Conversation

Hugh Hunt is a Reader in Engineering Dynamics and Vibration at the University of Cambridge.

This article was originally published on The Conversation. Read the original article.