Sharon Block, Union Ally and Biden Regulation Chief, to Exit (1)

The top political official in the White House regulatory review office is departing her post, leaving the office without a leader appointed by President Joe Biden.

Sharon Block, an Obama-era labor official, will depart next week from her role leading the Office of Information and Regulatory Affairs. That office vets rules penned by individual agencies and mediates disagreements between departments on how to implement the president’s wishes.

Biden has yet to nominate a permanent leader for the job. Block has been filling the spot for over a year, and her departure once again creates an opening in the ...