Who are the men going to the United States?

A vast majority of the 58 men leaving Papua New Guinea on Tuesday are from three countries: Myanmar, Afghanistan and Pakistan.

They were all vetted extensively by American officials who conducted background checks and interviews, and they range in age and educational background. Many of them learned English while detained on Manus, and they are the third and largest group to have left Manus since Mr. Trump took office.

A few months ago, 54 refugees from Manus were resettled in various parts of the United States.

Why are they going now?

American officials in Australia have been saying for months that they were proceeding cautiously and deliberately, and the plan for the men who left Tuesday has been in the works for months.

Several refugees told me in November that they were told they would be departing in January — not anticipating the battle over immigration that has gripped Washington over the past few weeks.