From ABC News:

But as for whether another pursuit of national office, as she did less than a year ago when she joined Sen. John McCain, R-Ariz., in the race for the White House, would result in the same political blood sport, Palin said there is a difference between the White House and what she has experienced in Alaska. If she were in the White House, she said, the "department of law" would protect her from baseless ethical allegations.

"I think on a national level, your department of law there in the White House would look at some of the things that we've been charged with and automatically throw them out," she said.

Department of Law? I'm no lawyer, but...

 --Isaac Chotiner