Might sound good for a "gotcha" -- but by definition, one cannot commit perjury or misrepresent future events or opinions. Misrepresentations require a statement of fact. You can break a promise or a pledge but it's not a lie.
Sen. John Cornyn: Do you believe that there is a federal constitutional right to same-sex marriage?"
Kagan: "There is no federal constitutional right to same-sex marriage."
Then took the opposite position in Obergefell v. Hodges
great observation by @801010athlete - watch how moves are digested and where they are supported. - think of them as Zones rather than price specific. - this pull back was supported at a previous congestion area. That's really positive.