Lawmakers in Washington are trying to get the first. My colleagues got some of the second.

The Times’s Susanne Craig and Russ Buettner obtained 10 years’ worth of tax information contained in Mr. Trump’s returns from a person who had legal access to them, but whose identity The Times has not disclosed.

Mr. Trump reported $1.17 billion in losses from his core businesses from 1985 through 1994, according to the information. Year after year, he appears to have lost more money than nearly any other individual American taxpayer. The numb ers contradict the narrative of business success and deal-making star power that he later used to help propel himself into the White House.

[A decade in the red: Mr. Trump’s tax figures show over $1 billion in business losses.]

Here’s a glimpse of what he was up to during that decade:

1985: His core businesses lost $46.1 million

Mr. Trump appeared on the Forbes “rich list” for the first time. His estimated net worth, according to the magazine, was $600 million, and included the real estate empire that his father, Fred Trump, still owned.