Video: Michelle Obama welcomes Prince Harry to the White House Prince Harry's first day in America saw him visit the White House for a reception with the First Lady and a group of youngsters making mementoes for their mothers. With Mother's Day traditionally held on the second Sunday of May in America, the children were busy making presents in President Barack Obama's official Washington home ahead of the weekend's celebrations. The royal was a surprise guest whose attendance had been kept secret from the 170 invited mothers, grandmothers and children. Prince Harry's visit to the US places great emphasis on honouring the sacrifices made by UK and American troops and highlighting the efforts of those seriously wounded in Afghanistan and Iraq to rebuild their lives. During the seven-day tour Harry will attend the Warrior Games, a Paralympic-style sporting championship for injured servicemen and women, support British interests and promote his own charities.