Donald Trump is ready to begin taking executive actions on his first day in the White House to move quickly on his pledge to crack down on immigration, build a wall on the US-Mexican border and rollback outgoing President Barack Obama's policies.
Mr Trump, a Republican elected on 8 November, arrived in Washington on a military plane with his family a day before he will be sworn in during a ceremony at the US Capitol.
During a break in inauguration festivities, Mr Trump is poised to wield one of the most powerful tools of his office, the presidential pen, for executive actions that can be implemented without the input of Congress.
"He is committed to not just Day 1, but Day 2, Day 3 of enacting an agenda of real change, and I think that you're going to see that in the days and weeks to come," Trump spokesman Sean Spicer said, telling reporters to expect activity tomorrow, during the weekend and early next week.
Mr Trump's advisers vetted more than 200 potential executive orders for him to consider signing on healthcare, climate policy, immigration, energy and numerous other issues, but it was not clear how many orders he will initially approve, according to a member of the Trump transition team who was not authorised to talk to the press.
Signing off on orders puts Mr Trump, who has presided over a sprawling business empire but has never before held public office, in a familiar place similar to the CEO role that made him famous, and will give him some victories with his supporters before he has to turn to the lumbering process of getting Congress to pass bills.
The strategy has been used by other presidents, including Mr Obama, in their first few weeks in office.
"It sends two messages. The first is that he wants to show he will take action and not be stifled by Washington gridlock. The second is that he will move forward on reversing policies that he believes to be broken and bad," Princeton University presidential historian Julian Zelizer said.
Mr Trump also is expected to impose a federal hiring freeze and take steps to delay implementation of a Labor Department rule slated to take effect in April that would require brokers who give retirement advice to put their clients' best interests first.
Mr Obama, a Democrat ending eight years as president, made frequent use of his executive powers during his second term in office, when the Republican-controlled Congress stymied his efforts to overhaul immigration and environmental laws.
Many of those actions are now ripe targets for Mr Trump to reverse.
"Most presidents want to establish their own parameters very quickly," said Craig Shirley, a Ronald Reagan biographer.
"What can he do as an executive to make a clean break? Which is to rescind most of Obama's executive orders."
Trump expected to order building of wall
Mr Trump is expected to sign an executive order in his first few days to direct the building of a wall on the southern border with Mexico, and actions to limit the entry of asylum seekers from Latin America, among several immigration-related steps his advisers have recommended.
That includes rescinding Mr Obama's order that allowed more than 700,000 people brought into the United States illegally as children to stay in the country on a two-year authorisation to work and attend college, according to several people close to the presidential transition team.
It is unlikely Mr Trump's order will result in an immediate round-up of these immigrants, sources told Reuters. Rather, he is expected to let the authorisations expire.
The issue could set up a flash-point with Mr Obama, who told reporters yesterday that he would weigh in if he felt the new administration was unfairly targeting these immigrants.
Advisers to Mr Trump expect him to put restrictions on people entering the US from certain countries until a system for "extreme vetting" for Islamic extremists can be set up.
During his presidential campaign, Mr Trump proposed banning non-American Muslims from entering the US but his executive order regarding immigration is expected to be based on nationality rather than religion.
Another proposed executive order would require all cabinet departments to disclose and pause current work being done in connection with Mr Obama's initiatives to curb carbon emissions to combat climate change.
Mr Trump also is expected to extend prohibitions on future lobbying imposed on members of his transition team.