What if Trump doesn’t leave White House after his defeat?

The question is, what would happen if Trump did not leave the White House?
If the former president does not leave the White House after losing the US election, he is considered a detainee. Democratic candidate Joe Biden and Republican candidate Donald Trump are vying for the US presidency.
President Trump has been accused of rigging the election and has challenged the results in three states. Petitions filed by Donald Trump in the court have stated that Donald Trump’s team does not have proper access during the counting of votes.
The US President had issued a statement on the sudden stoppage of results yesterday, saying that the sudden stoppage of results was a deception.
Tensions are high in various US cities following President Trump’s allegations of electoral fraud. Supporters of US presidential candidate Joe Biden have called on Donald Trump to vacate the White House.
The American 62 Airborne will respectfully escort him out of the White House and into Pennsylvania Street. In the event of a defeat for the US president, the command of the immediate secret service will be transferred to the newly elected president. They will be given limited briefings on sensitive issues.
In case of defeat, Donald Trump will be the first president not to be re-elected in 28 years. In the 1993 election, Bush Sr. failed to secure a second term.