Democrats, angered by the continued filibuster, forced Republicans to stay on the floor around the clock. As time continued, Senate Majority leader Robert Byrd (D-WV) used a little known provision to order the Senators to the floor at 12:30 in the morning. When Republicans refused to heed the order, Byrd used another provision to compel the hold-outs.
"Madame President, I move that the Seargent-at-Arms be instructed to arrest absent senators and bring them to floor," Senate Majority leader Robert Byrd (D-WV) said.
http://www.pbs.org/newshour/campaign/issues/1988_retro.htmlDiscovered in a Link here:
Doris Kearns Goodwin: "Let Them Filibuster."
http://swampland.blogs.time.com/2010/01/29/doris-kearns-goodwin-let-them-filibuster/Also, though some reports have suggested that it is no longer possible to do this under the Senate rules, this is not true. It simply requires the majority to muster enough will and discipline to keep a quorum on the floor. Here's an account of how it worked as recently as 1988.
Edit: wrong date.