WASHINGTON—Nearly six months into President Trump’s second term, voluntary departures from the government have thinned the ranks so much that some agencies are saying more cuts aren’t necessary after all.

The administration argues that the president does not need additional authorization from Congress to conduct agency-wide layoffs. Attorney General Pam Bondi praised the Supreme Court’s order, saying it “stopped lawless lower courts from restricting President Trump’s authority over federal personnel.”

Federal agencies across government can resume laying off their employees en masse after the Supreme Court reversed a court order that barred those reductions, with several agencies likely to move swiftly to start cutting staff.