Trump’s Economic Cabinet Is Mostly Bare. This Man Fills the Void.

A few weeks after the election, Gary Cohn, the president of Goldman Sachs, was summoned to Trump Tower for a discussion about the economy. It would be the first of many such meetings with President-elect Donald J. Trump.

During that sit-down, on Nov. 29, Mr. Cohn briefed Mr. Trump on what he regarded as the chief hurdle to expanding the economy, according to people who were briefed on the discussion: a stronger dollar, which would undermine efforts to create jobs.

Mr. Cohn also argued that the bold infrastructure projects that Mr. Trump envisioned would need private-industry partners, those people said, in order to avoid weighing down the government with costs.

That got Mr. Trump’s attention.

The president-elect turned to the other people in the room — his son-in-law, Jared Kushner; his chief strategist, Stephen K. Bannon; his chief of staff, Reince Priebus; and Steven T. Mnuchin, his campaign’s chief fund-raiser and Mr. Trump’s nominee to be Treasury secretary — surprised that his infrastructure ideas had such a potential downside.

“Is this true?” Mr. Trump asked the group, according to those people. Heads nodded. “Why did I have to wait to have this guy tell me?” he demanded.

It would not be the only time Mr. Cohn was a lonely voice in Mr. Trump’s inner sanctum. Two and a half months after that initial meeting, with key economic posts in the White House and cabinet still vacant, he has become the go-to figure on matters related to jobs, business and growth. He resigned from his position at Goldman in December to become director of the president’s National Economic Council.