US President-elect Donald Trump outlined plans on Tuesday (AEDT) for his first day in office, including withdrawing from a major trade accord and investigating abuses of work visa programs, and met with Cabinet hopefuls at his Manhattan office tower.

Mr Trump met with Oklahoma Governor Mary Fallin, Democratic US Representative Tulsi Gabbard and former Texas Governor Rick Perry. However, he announced no further appointments, keeping candidates and the public guessing about the shape of the administration that will take office on January 20.

Ms Fallin, Ms Gabbard and Mr Perry were the latest of dozens of officials who have made their way across the opulent lobby of Trump Tower for talks with the Republican president-elect in a relatively open - and unconventional - transition process since his election victory on November 8.

Mr Trump, who has not held a news conference since his election, issued a video on Tuesday outlining some of his plans for his first day in office, including formally declaring his intention to withdraw from the Trans-Pacific Partnership, or TPP, trade deal, which he called "a potential disaster for our country."

The president-elect said he would replace the accord with bilaterally negotiated trade deals that would "bring jobs and industry back onto American shores".

"My agenda will be based on a simple core principle: putting America first. Whether it's producing steel, building cars or curing disease, I want the next generation of production and innovation to happen right here on our great homeland, America, creating wealth and jobs for American workers," he said.

Mr Trump also said he would cancel some restrictions on producing energy in the United States on his first day in office, particularly shale oil and "clean coal", which he said would create "many millions of high-paying jobs".

He promised to direct the Labor Department to investigate abuses of visa programs for immigrant workers. The main US visa program for technology workers could face tough scrutiny under Mr Trump and his proposed attorney general, US Senator Jeff Sessions, a longtime critic of the program.

Mr Trump had made eliminating regulations and withdrawing from the TPP central to his campaign, but he sent mixed signals during the campaign about his views on visa programs, including the main H-1B visa for high-tech industry workers.

Mr Trump returned to Twitter on Tuesday, saying "many people" would like to see Brexit campaigner Nigel Farage as British ambassador to the United States. "He would do a great job!"

Mr Farage, who helped lead the successful referendum fight for Britain to leave the European Union, spoke at a Trump rally during the US campaign and visited the president-elect after his victory.

Former Republican Senator Scott Brown of Massachusetts told reporters he had a "great" meeting about veterans' issues with Trump.

Mr Trump also met with former House of Representatives Speaker Newt Gingrich and Elaine Chao, the US labor secretary under former President George W. Bush, advisers said.

Mr Trump's transition team said Rick Perry, the former Texas governor, was being considered for Cabinet posts including defence, energy and veterans affairs.

Mr Trump, a New York businessman who has never previously held public office and who was the surprise winner over Hillary Clinton this month, has so far named senior leaders of his national security and law enforcement teams.

In addition to Jeff Sessions, they are US Representative Mike Pompeo of Kansas as CIA director, and retired Army Lieutenant General Michael Flynn as White House national security adviser.