The plea comes exactly 100 days after Jon Ryan Schaffer and hundreds of other supporters of former president Donald Trump stormed the Capitol, allegedly in an effort to prevent Joe Biden from being confirmed as the next president. Prosecutors hope Schaffer's plea spurs others to provide additional evidence in hopes of avoiding long prison sentences.

he plea marks a new stage in the historic investigation, as prosecutors seek to work up the chain of defendants to gather evidence and better understand the full scope of any planning and organizing of the violence — particularly among groups like the far-right Oath Keepers and the Proud Boys. Dozens of members from both groups appeared to act in concert to storm the building, prosecutors have alleged.