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People familiar with the decision told the Wall Street Journal that Ms. Nazareth largely withdrew because of the weeks of vetting, including two intense questioning sessions. According to the Journal’s sources, the Nazareth vetting did not uncover any tax problems or other potential embarrassments.

Ms. Nazareth, a partner at the law firm Davis Polk & Wardwell, could not be reached for comment.

In an e-mailed statement, Treasury spokesman Isaac Baker that “any rumors of vetting problems or delays in the process are simply not true.”

“With more than 50 political appointees already hard at work, the department is ahead of staffing levels from previous administrations,” he said Thursday night.