She was sworn in just as quickly, the FTC said that evening.
The surprise move gives progressive Democrats both the reins and a majority at the antitrust agency, spurring hopes among critics of Silicon Valley's giants for a new assertiveness from the FTC, which is already pursuing an antitrust probe of Amazon and waging a lawsuit that seeks to break up Facebook's social networking monopoly.
Plans for Khan's elevation as chair came to light when Sen. Amy Klobuchar (D-Minn.) announced the news during a Senate Judiciary antitrust hearing Tuesday afternoon, before any announcement from the White House. Khan replaced Rebecca Kelly Slaughter, who has served as acting FTC chair since January and remains a member of the commission.
Sen. Elizabeth Warren (D-Mass.) praised President Joe Biden's designation of Khan as chair as "tremendous news."
"With Chair Khan at the helm, we have a huge opportunity to make big, structural change by reviving antitrust enforcement and fighting monopolies that threaten our economy, our society, and our democracy," Warren said.