Trump transition live updates: Trump announces pick for energy secretary

A volunteer-run effort on Robert F. Kennedy Jr.'s website has begun crowd-sourcing ideas for appointments in Trump's administration.

A website titled "Nominees for the People" gives anyone the chance to submit names of people they'd like to see join the administration.

"President Trump and Robert F. Kennedy Jr. want your help nominating people of integrity and courage for over 4,000 appointments across the future Trump administration," the website reads.

Stefanie Spear, a Kennedy spokeswoman, told ABC News that the crowd-sourcing effort is "a grassroots initiative run by volunteers," and is not actually spearheaded by Kennedy, although the page uses the "mahanow.org" URL that Kennedy's official campaign website adopted after he exited the race.

"We’ve always offered space on our website to our grassroots movement," Spear said.

This post has been updated to reflect that the crowd-sourcing effort is a volunteer-run effort.

-ABC News' Sasha Pezenik

Former Immigration and Customs Enforcement Director Tom Homan, Trump's newly announced "border czar," said his main priority will be overseeing and formulating Trump's long-vowed mass deportation strategy while consolidating decisions related to border security.

"Everybody talks about this mass deportation operation. President Trump talks about. I'll oversee that and come up with a strategy for that," Homan said during a lengthy interview with his hometown television station WWNY on Monday.

Homan said Trump's mass deportations is "going to be a targeted enforcement operation, concentrating on criminals and national security threats first."

He acknowledged that the deportations would be costly but argued the policy would "save the taxpayers a lot of money."

Homan said he does not plan to "separate women and children" but acknowledged that deporting alleged criminals would result in breaking up families.

"When we arrest parents here, guess what? We separate them. The illegal aliens should be no different," Homan said.

Homan also said worksite enforcement -- an aspect of immigration policy focused on unauthorized workers and employers who knowingly hire them -- is "going to get fired back up."

"Under President Trump, we're going to work it and we're going to work it hard," he said.

-ABC News' Peter Charalambous

Melania Trump is not expected to travel to Washington with President-elect Donald Trump on Wednesday, two sources told ABC News.

First lady Jill Biden had extended an invite to Melania Trump for a meeting, according to the sources. In 2016, Michelle Obama had hosted Melania Trump at the White House.

The Trump campaign declined to comment. The first lady’s office confirmed to ABC News that a joint invitation was extended to the Trumps to meet at the White House though declined to comment beyond that.

-ABC News' Rachel Scott, John Santucci and Molly Nagle

Robert F. Kennedy Jr. has continued to broadly advise Trump and the transition team on health-related appointments and has been in discussions to possibly fill a major role in the next administration, sources familiar with the matter told ABC News.

While sources caution that a role has not been finalized, RFK Jr. has been discussed as a potential candidate for the next secretary of Health and Human Services. But other roles are also on the table, including a broad "czar"-like position that would advise on policy and personnel decisions in other health arenas, the sources said.

RFK Jr. has been in active discussions with the transition team since Trump's election victory last week. He's been spotted at Trump's Mar-a-Lago club multiple times and has been engaging in presentations which include candidates for specific Cabinet and health-related jobs, sources said.

He has spent hours with the co-heads of Trump's transition team -- billionaire Howard Lutnick and Linda McMahon -- in addition to others at Mar-a-Lago such as Trump's son Donald Trump Jr.; investor and donor Omeed Malik; Tucker Carlson; and Del Bigtree, RFK Jr.'s former campaign spokesperson who produced a documentary called "Vaxxed: From Cover-Up to Catastrophe."

-ABC News' Katherine Faulders, Olivia Rubin and Will McDuffie