His previous book, “Dead Certain: The Presidency of George W. Bush,” was a New York Times best-seller. In “Do Not Ask,” the author points his sharpened steak knife at the United States House of Representatives. Specifically, he slices into the 112th Congress (convened after the 2010 election), with its unusually large freshman class of 93 new representatives, most of them Republican. Stories about the experiences of these newly minted legislators and the effect they have had on the House make up the bulk of the book.