Speaker John Boehner (R-Ohio) chided Caroline Kennedy to run for office during an event at the Capitol on Thursday.

Vice President Joe Biden, members of Congress, the Kennedy family and dignitaries such as astronaut Buzz Aldrin gathered in the rotunda to mark the 50th anniversary of President John F. Kennedy's inauguration.

"Sadly, this is the first Congress to convene without a Kennedy since the Truman administration," Boehner noted at the opening of his brief remarks.

He paused for a moment and glanced over his shoulder.

"Caroline, there's still time," he said.

Kennedy, who is the daughter of the late president, gave the Republican a smile. She had been mentioned as a possible appointee to Secretary of State Hillary Clinton's New York Senate seat in 2009. She met with then-Gov. David Paterson (D), but abruptly withdrew her name from consideration citing "personal reasons."

Paterson subsequently appointed then-Rep. Kirsten Gillibrand (D-N.Y.) to the job. She won election to her first full term in November.