Chelsea Clinton crept into the White House early Saturday -- a surprise treat for her mother's 50th birthday.
It was her first trip home since leaving for college last month.
Secret Service agents said Chelsea -- a Stanford University freshman -- arrived from the airport at about 2 a.m., with more than enough time for private celebrations of Hillary Rodham Clinton's birthday today.
"It was a huge surprise for the first lady," spokeswoman Marsha Berry said. While President Clinton normally spends a few hours in the Oval Office on weekends, it was shuttered Saturday as the reunited family spent a quiet day in the White House residence.
Two days of elaborate, public festivities surrounding Mrs. Clinton's birthday will begin Monday in her hometown of Chicago.