Homan, a contributor to Fox News, was surprised by the announcement, according to a well-known source.
Two senior White House officials admitted that the details of a position are still being worked out and talks are in progress.
Trump's announcement also surprised officials at the White House. According to one of the officials, talks are still going on about the nature of the border czar's position. Prior to the President's announcement, the adjutants had not determined the nature and scope of the role and did not officially review the candidates, although Homan was internally named.
One of the potential problems associated with the Tsar's role is structuring in a way that does not run counter to the legal responsibilities conferred on the Ministry of Internal Security in its creation by Congress. According to the official, these decisions are still unresolved, even after Trump announced this this morning.
This officer did not know if or when the White House would advance Trump's election.
During an almost hour-long interview on "Fox and Friends" on Friday morning, Trump said the former incumbent immigration and customs director will be "a border czar".
"Tom Homan is coming back," Trump said, confirming that the message should be announced next week.
"He's going to be very involved in the border, that's what he really wants to be involved in," Trump continued, adding later, "He's going to be a border czar and he'll report directly to me probably work in the White House, but spend a lot of time at the border. "It is not clear what the position will involve or who the person filling the role would report.
The new position is in the midst of a dramatic increase in concerns on the southern border and a thin-stretched Ministry of Homeland Security. The department has been lacking in leadership since Minister Kirstjen Nielsen was released in April.
This is the latest in several staffing announcements Trump announced before the White House was fully prepared, and in some cases even before the candidate was notified. For example, a year ago, Trump announced Robert Wilkie's surprise announcement as his nominee as Veterans Affairs Secretary when Wilkie sat in the audience at an event on the criminal justice system.
"I will inform him shortly – he does not know that yet – that we will put his name on the list for Secretary of Veterans Administration," said Trump.
Homan, a law enforcement officer, is the former acting director for immigration and customs control. He announced his plans to retire in 2018 and joined Fox News shortly after leaving the agency to contribute to the network.
Homan was a staunch advocate of the President's immigration policy.
Lastly, Homan applied for an agreement between the US and Mexico to improve enforcement, calling it "an achievement that is
Homan was previously named Secretary of the US Department of Homeland Security, a position Kevin McAleenan held in his acting capacity.