Pressure on Obama to "evolve" some more on same-sex marriage.

Tune in and witness the evolution before your very eyes in just a few minutes.

The sudden booking suggests an interest on the part of the White House to get Mr. Obama in front of cameras, albeit in a carefully controlled interview setting, as soon as possible.

The presumably friendly interviewer – evolution extractor — is Robin Roberts of “Good Morning America.

UPDATE: Obama evolves, endorses same-sex marriage.