First of all, get used to the idea of “President Palin” .
Then remember that the executive branch of government is supposed to enforce existing laws, not decide whether or not they’re constitutional. That job goes to the courts if the laws are challenged.
Sooo check out what Gingrich (quoted at Newsmax) has to say about what would happen if a Republican did what Obama is doing.
“Imagine that Governor Palin had become president. Imagine that she had announced that Roe versus Wade in her view was unconstitutional and therefore the United States government would no longer protect anyone’s right to have an abortion because she personally had decided it should be changed. The news media would have gone crazy. The New York Times would have demanded her impeachment.”