Vice President Biden and Hillary ClintonHillary Rodham ClintonChelsea Clinton attends Muslim solidarity rally in NYC Congressional Black Caucus expected to meet with Trump soon Why liberals should accept a conservative carbon tax plan MORE will meet for breakfast at the Naval Observatory Tuesday morning, according to the vice president's schedule.

The meeting comes a day after the former secretary of State visited the White House for lunch with President Obama. While the White House said the private meeting was mostly “social,” the news fueled speculation about Clinton's 2016 prospects.

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“Secretary Clinton and the president have developed not just a strong working relationship, but also a genuine friendship,” White House spokesman Josh Earnest said.  “It’s largely friendship that’s on the agenda for the lunch today.”

Clinton has yet to say whether she will run for president on the Democratic ticket, but she is the clear front-runner in most recent polls.

Biden has also declined to rule out a possible 2016 bid for the White House.