Capitol police increase security as QAnon chatter grows louder around Trump's March 4 ‘inauguration’
(L-R) Melania Trump, Republican U.S. presidential nominee Donald Trump, and Ivanka Trump attend an official ribbon cutting ceremony at the new Trump International Hotel in Washington U.S., October 26, 2016. REUTERS/Gary Cameron

Capitol police are beefing up security ahead of Thursday, when QAnon conspiracy theorists believe former president Donald Trump will make his triumphant return to the White House.

Adherents of the right-wing conspiracy theory believe the twice-impeached one-term president will be sworn in to replace President Joe Biden on March 4, which had been designated as Inauguration Day until the 20th Amendment established that date as Jan. 20, and law enforcement is preparing for the possibility of unrest.

The Trump International Hotel in Washington is capitalizing on -- and thus feeding -- the March 4 conspiracy by raising its rates on that date and the night before, although some of the theory's promoters appear to be hedging their prediction by setting March 20 as the possible date of the former president's inauguration.

The House sergeant-at-arms notified lawmakers in a letter Monday that his office was coordinating with Capitol police against any potential threats, but he said the March 4 date appears to have declined in significance in recent days and no threats of violent demonstrations had emerged, unlike the period before the deadly Jan. 6 insurrection.

The March 4 theory is borrowed on a fallacy from the sovereign citizens movement, which believes the U.S. government was ended and the country was established as a corporation in 1871, and conspiracy-mongers have offered a variety of bizarre claims as evidence that Trump will return to power despite losing the election.