The health secretary is trying to restart the work of a panel that advises the government on vaccines, after a judge froze its decisions and prevented it from meeting.

The forthcoming order echoes President Trump’s decision to repeal executive orders that have protected other public lands from vehicles for decades.

The order, which signaled a shift from the hands-off approach the White House had previously taken toward A.I., followed debates over how to gain control of A.I. models without disrupting innovation.