Mr. Warsh is known as a consensus builder, skills he will need if he is to head the Federal Reserve when President Trump is demanding rock-bottom rates.
Investors are increasingly souring on the United States, as illustrated by the declining dollar, the stalled stock market and rising government borrowing costs.
Since President Trump made threats about Greenland, the continent’s leaders have debated the rapid deterioration of U.S. ties in policy papers and at dinner.
Todd Blanche, the deputy attorney general, told reporters on Friday that “there’s a hunger or a thirst for information that I do not think will be satisfied by the review of these documents.”