Sen. Rand Paul of Kentucky, a Republican, held the floor of the Senate for 10 1/2 hours Wednesday afternoon and evening, airing his objections to the NSA bulk collection of telephone records in the U.S.
Many of the accounts of this lengthy performance referred to it as a filibuster, or a near-filibuster, or some kind of filibuster or other.
It was none of the above.
In the contemporary world of the Senate, the kind of filibusters you can see are extremely rare. But the kind of filibusters you can't see happen all the time. It is scarcely an exaggeration to say "virtual filibusters" are now the normal course of business.
What is a filibuster? It's a senator or group of senators exercising their right to unlimited debate. If pursued in earnest, it can prevent a piece of Senate business off the floor indefinitely. The chamber's majority leader can either remove the issue at hand from consideration or file a motion to invoke cloture.
That motion takes 60 votes to succeed. That is why you constantly hear that it takes 60 votes to get anything done in the U.S. Senate.
Once cloture is invoked, a set period of debate may ensue, followed by a debate on the issue itself.
The requirement for cloture was originally two-thirds of the Senate. In those days, filibusters were reserved for the gravest existential issues. Southern senators used it to defeat civil rights bills for decades.
But after the requirement was lowered to three-fifths (60) in 1974, senators came to embrace the filibuster as just another tool. With each decade since, the use of it has proliferated. Cloture votes are now a regular event.
But you wouldn't know it because the virtual filibuster typically goes on while the Senate is doing other business. The filibustering senator or senators may not even appear on the floor to debate the issue itself.
So what Paul did was rather the opposite. Knowing he could not really prevent the Senate from considering a renewal of the NSA data collection program as part of the renewal of the Patriot Act overall, he performed the old-fashioned "live filibuster" largely for the cameras.
This is not to say his opposition to the program is insincere. He clearly opposes it, as do the three other Republicans who joined in on Wednesday and the seven Democrats who did so as well.
But by carrying the torch for this group and illuminating the privacy issue, Rand Paul was also casting some dramatic light on his own candidacy for president.
Rand Paul's long hours on the Senate floor were about liberty, the Constitution and the need to stand out somehow in a crowded field of GOP hopefuls.
In practical terms, however, public perceptions aside, Senate Majority Leader Mitch McConnell filed for cloture on a bill renewing the Patriot Act with the NSA bulk collection program intact for two months. He also filed cloture on another bill, passed by the House by a wide margin, that would renew the Patriot Act without that NSA feature.
Either or both could see a vote on the Senate floor before the body leaves for its Memorial Day recess.