Update at noon ET. It's Over:
Saying that "it's fitting that this debate concludes with a prayer" because he believes Americans are pleading with Congress to defund President Obama's health care law, Republican Sen. Ted Cruz of Texas just wrapped up his marathon protest on the Senate floor.
Cruz began speaking just after 2:40 p.m. ET Tuesday and abided by Senate rules when he finished at noon today.
"The pleas from the American people," he said of what he sees as the public's opposition to Obamacare, "are deafening."