Sen. Tom Coburn (R-Okla.) says he will make sure the entire healthcare bill is read out loud on the Senate floor before debate can proceed.

Though the final Senate bill hasn't been revealed yet, the House version spanned almost 2,000 pages. The Senate bill is likely to be at least 1,000 pages.

It would take the Senate clerk at least a few days to complete the task.

Democrats hope to take up the bill by Friday. But if Coburn follows through on his threat, a motion to proceed could be delayed until next week.

"The American people are going to get to hear this bill," Coburn told reporters Monday night.

Under Senate rules, any senator can demand that a bill be read before debate. Republicans, however, would have to stay on the floor the entire time to object to Democratic motions to stop the reading.