Holland Cotter: “Not only are the Obamas the first presidential couple of African descent to be enshrined in the collection. The painters they’ve picked to portray them — Kehinde Wiley, for Mr. Obama’s portrait; Amy Sherald, for Mrs. Obama — are African-American as well. Both artists have addressed the politics of race consistently in their past work, and both have done so in subtly savvy ways in these new commissions. Mr. Wiley depicts Mr. Obama not as a self-assured, standard-issue bureaucrat, but as an alert and troubled thinker. Ms. Sherald’s image of Mrs. Obama overemphasizes an element of couturial spectacle, but also projects a rock-solid cool.”