Trump and Barron, 11, accompanied the president from the Trump National Golf Club in Bedminster, N.J., where he spent the weekend, arriving via Marine One on the White House lawn shortly after 8 p.m.
As the president exited the aircraft, he was followed by Barron, wearing a gray T-shirt reading "The Expert." Mrs.
Melania's parents are already familiar figures at Mar-a-Lago, Trump's resort in Palm Beach, Fla., and are likely to be seen more often now at the White House.
Trump, 47, is the first first lady in the modern era not to move into the White House on Jan.
In the early months of the administration, she was only occasionally seen carrying out FLOTUS duties (hosting the spouses of foreign leaders, attending lunches and galas at the White House), but some of her official engagements were so low-key they were unannounced and were not covered by a press pool.