http://www.thedailybeast.com/articles/2015/09/29/michelle-obama-and-stephen-colbert-share-a-laugh-at-bill-clinton-s-expense.html

The first lady’s Late Show visit was played cozy and safe, with Colbert (http://www.hollywoodreporter.com/bastard-machine/critics-notebook-searching-stephen-colbert-828282) trying to ingratiate himself with her rather than ask pressing questions.

Why would he ask her a tough question? She's a democrat, a black democrat, and wife of the all-time hero black guy.