In the case of Stephen C. Randolph of Kentucky, agents went more high-tech — and deceptive — according to documents filed last week in U.S. District Court in Washington, where all defendants in the Capitol breach face prosecution. The Justice Department’s Capitol Breach Cases website now totals 423 defendants. FBI agents in Kentucky turned to computerized facial recognition technology to nail Mr. Randolph’s identification and went undercover to try to obtain incriminating statements, the affidavit discloses. Mr. Randolph was one of about 800 Trump supporters who breached the Capitol on Jan. 6 as part of outgoing President Trump’s “Stop the Steal” movement. Mr. Trump wanted to pressure Vice President Mike Pence to send the congressional joint session’s Electoral College votes back to battleground states, where legislatures could reelect him. Mr. Pence, the chamber’s presiding officer, refused, and Congress certified Joseph R. Biden as the winner.