ANDREWS AIR FORCE BASE, Md. (AP) _ Even President Clinton must obey Mother Nature.

Air Force One was socked in by fog today, setting the president's schedule back by about two hours before he was finally able to depart.

Marine One, the president's helicopter which took Clinton from the White House, had to make two passes at Andrews Air Force Base before it could see the runway well enough to land. The fog, which rolled in suddenly at the base along the Potomac River, was so thick that a truck which guides Marine One couldn't see the helicopter and two vehicles had to use radios to communicate.

With the president planning a full day of events in south Florida, White House aide Kris Engskov said the delay would probably interfere with plans for a presidential golf outing.

``He's painfully aware of that,'' Engskov said.