The Trump White House website says "Sorry, no results found for LGBT", and the only "gay" result is a reference to the "gay friendliness" of Grace Anna Goodhue Coolidge, wife of President Calvin Coolidge.
More than 50 Democratic members of Congress, led by Rep. John Lewis, of Georgia, however, said they will boycott the inauguration for a variety of reasons, including allegations of Russian involvement on Trump's side in the election.
Incoming first lady Melania Trump took over the @FLOTUS handle and Michelle Obama shifted to @FLOTUS44.
It was not immediately clear how Trump was managing his account or if his staff were tweeting for him. "You made me a better leader and a better man", he said.
"This will be your presidential center as much as it ours, so we want you to tell us what we should be thinking about as we get to work", she said. "And I promise to be there with all of you", he said.
President Obama's Whitehouse.gov included pages dedicated to LGBT civil rights and climate action - two issues he championed during his terms.
Thank you for being a part of the past eight years.
But many will continue to fear Trump's White House will pursue a raft of energy and environmental policies created to slow and block the development of clean technologies, while maximising the exploitation of fossil fuels and dismissing escalating climate risks.
After formally taking office, President Trump roared "we will make America great again" as he pledged to give the power back to the people. The swearing will be succeeded by the performances of the Radio City Rockettes, Jackie Evancho and Mormon Tabernacle Choir.
To cite just two examples, in the long campaign to become president, Mr Trump expressed antipathy to undocumented immigrants and a desire to renegotiate the North American Free Trade Agreement (NAFTA) between the USA and its neighbours to the north and south to ensure that America gets a better deal from the three-nation free trade pact. The transition team, however, cast the proceedings as deliberately low-key, aimed at "the people".