US personnel chief Katherine Archuleta resigns amid data breach

US personnel chief Katherine Archuleta resigned after more than 21 million affected by hack. Archuleta praised the agency's employees as "some of the most dedicated, capable and hardworking individuals in the federal government."

"I have complete confidence in their ability to continue fulfill OPM's important mission of recruiting, retaining and honoring a world-class workforce to serve the American people," Archuleta said.

Archuleta will be replaced by Beth Cobert, who currently works in the White House budget office.

"This is the absolute right call. OPM needs a competent, technically savvy leader to manage the biggest cybersecurity crisis in this nation's history.

"The IG has been warning about security lapses at OPM for almost a decade. This should have been addressed much, much sooner but I appreciate the President doing what's best now,” House Oversight and Government Reform Chairman Jason Chaffetz said.