India, June 19 -- Former President George W. Bush surprised former first lady Michelle Obama with a tin of Altoids mints at the opening of the Obama Presidential Center in Chicago on Thursday, reviving one of the most memorable moments from their bipartisan friendship.

Bush gave Michelle Obama the mints as a deliberate callback to their widely shared exchange at the funeral of the late Sen. John McCain in 2018, where he quietly slipped her an Altoid while they were seated together.

The lighthearted gesture went viral for the warm relationship the pair have maintained despite belonging to opposing political parties.

The latest exchange took place backstage before the dedication ceremony, with former President Barack Obama and former Pre...