She was known as America's first lady of song.

VOA: special.2010.07.04

It is because of them that I stand before you as First Lady of the United States of America. (Applause.) That is the legacy of the independence generation, the freedom generation.

WHITEHOUSE: First Lady Michelle Obama Addresses Young African Women Leaders | The White House

The former First Lady has even offered explicitly to extend the protection of America's nuclear umbrella to new parts of the world.

CENTERFORSECURITYPOLICY: Incoherence on deterrence

This is all grist to the mills of Michelle Obama, America's first lady, and Rahm Emanuel, Chicago's mayor, who appeared together at a South Side pharmacy on October 25th to promote access to fresh food.

ECONOMIST: Poor access to fresh food is a solvable health problem