Democratic Sen. Cory Booker broke the record for the longest floor speech in recorded Senate history when he bested Sen.

Nearly 70 years after Strom Thurmond filibustered against Black civil rights, Booker’s marathon speech called out threats to democracy and the harm of Trump-era policies.

Throughout his speech Booker read letters from Americans about the impact that Trump’s agenda is having on their lives, drawing historical parallels and warning that the country faces a “looming constitutional crisis.