While it was President Joe Biden who signed the law that would force ByteDance to sell its stake in TikTok or face a ban, it’s his successor, Donald Trump, who has yet to fulfill his promise of arranging a deal to keep TikTok running, legally, in the United States. The current deadline for a deal is September 17th. Still, it hasn’t stopped Trump’s administration from creating @WhiteHouse on TikTok, which published its first post on Tuesday night: a video celebrating Trump’s…