Sen. Cory Booker (D-N.J.) started speaking on the Senate floor at 7 p.m. ET on Monday, and he hasn’t stopped yet.

As of noon Tuesday, Booker has been speaking for 17 hours, and he plans to speak as long as he is “physically able,” USA TODAY reports.

In a pre-recorded video posted to X while Booker is on the Senate floor, Booker said he is speaking about “what Donald Trump is doing to our nation.”

“It’s my plan to continue to go for as long as I possibly can,” he said in the update shortly after 8 a.m. ET. “I know we have the power; I believe the power of the people is greater than the people in power.”

Is Booker’s speech the longest in Senate history? Here’s what to know.

What are the longest filibusters in Senate history? Is Booker’s speech the longest

No. Axios reports that the record for the longest individual speech belongs to the late Sen. Strom Thurmond, a South Carolina Democrat who later joined the Republican Party. Thurmond spoke against the Civil Rights Act of 1957 for 24 hours and 18 minutes.

The previous record was held by Sen. Wayne Morse of Oregon, who in 1953 held a filibuster that lasted 22 hours and 26 minutes.

The longest multi-speaker filibuster was 60 days, per Axios, when some Southern lawmakers attempted to block the Civil Rights Act in 1964.

What are the longest all-night Senate sessions?

According to Senate records (through 2017), there have been 38 all-night sessions since 1915.

The longest one was in 1960, lasting 125 hours and 16 minutes from noon on Monday, Feb. 29, all the way to 5:31 p.m. on Saturday, March 5. There was one 15-minute recess on March 2.

The longest unbroken session during that period took 82 hours, 2 minutes, from March 2 to 5. Senators were considering a bill to lease a building at Fort Crowder, Missouri, that was being used as a vehicle for civil rights amendments.

Is Cory Booker conducting a filibuster?

Booker’s speech is not considered a filibuster, USA TODAY reports, because he is not attempting to stall or block legislation. However, the Senate floor will remain open so long as he is speaking.

Who is Cory Booker?

Cory Booker is a Democratic U.S. Senator who has represented New Jersey since 2013, when he became the first Black person to hold the seat. He won a special election and was re-elected for a full term in 2014.

How to watch Cory Booker’s marathon speech

USA TODAY is streaming Sen. Booker’s speech on YouTube, watch it live.