It's unclear if Clinton will speak to reporters during her return to the White House — as high-profile visitors sometimes do on the driveway. The meal in the State Dining Room is closed to reporters.
Clinton's husband, former President Bill Clinton, is not on the 25-person guest list — nor are the top Democrats in Congress.
As first lady, Clinton lived in the executive mansion for eight years, but failed to get elected herself in 2008, when she was narrowly defeated by Barack Obama in the Democratic primary, and then in 2016 when Donald Trump scored an upset win.
It's unclear why House Speaker Nancy Pelosi (D-Calif.) and Senate Majority Leader Chuck Schumer (D-NY) are not attending when their Republican counterparts are.