Senators on both sides of the aisle argued that some of the act's provisions infringe on civil rights. The bipartisan group proposed a three-month extension to continue debate and amend certain provisions, but the Senate also rejected that proposal Friday.

The Senate needed 60 votes to override a filibuster and end debate, which is called "invoking cloture." Cloture would have brought the Patriot Act to a final vote, allowing the Senate to renew it by a simple majority.

But only 52 senators voted to cut off debate; 47 voted against cloture.

The move lays the groundwork for a high-stakes showdown.

Bush has said he would veto a three-month extension, arguing it would be inadequate. But without an extension, 16 provisions could expire at the end of the year. There's also the possibility the Senate could still manage to bring the Patriot Act to a vote before the December 31 deadline.

What an interesting time to be an American. A Solstice Season to remember, for sure.