Donald Trump's impending White House return poses questions once again about conflicts of interest related to his business empire, with new cryptocurrency and other ventures raising fresh concerns.

The billionaire's stunning political comeback is "rocket fuel for the Trump Empire," said Mark Hass, an Arizona State University marketing professor.

After almost a decade of making headlines around the globe, Trump's "brand is... sort of the Nike or Apple of politics," he said.

"Everybody in the world knows what it stands for.

Trump no longer holds an executive title at the Trump Organization, which has been run by his two eldest sons since his 2016 election win.

However, the 78-year-old has retained his stake in the family business via a trust, which during his first term in office was managed by a third party.

After he left the White House, Trump made himself a co-administrator of the trust. He has yet to say if he will relinquish the position when he takes office again in January.

Regardless, according to Hass, Trump's association with his businesses will persist.

"Maybe he........

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