Book excerpt: Behind the scenes of a pivotal day during the most consequential presidential campaign in U.S. history.

His White House advisers considered giving him such a test to prove his fitness for a second term, but they worried it would draw new attention to his age, according to a forthcoming book.

His White House advisers considered giving him such a test to prove his fitness for a second term, but they worried it would draw new attention to his age, according to a forthcoming book.

So far, the goals of many of President Trump’s negotiations have been unrealized, even those he said would be accomplished in a matter of days or weeks.

In public, President Trump has defended his national security adviser. But behind the scenes, he has been casting around for advice.

President Trump’s sweeping promises are running headlong into the reality of governing.