Biden Joins TikTok Ahead of 2024 Presidential Election

US President Joe Biden's debut on TikTok has caused a stir -- not least because the Chinese-owned social media platform is still officially considered a security risk by Washington.

The video posted during the Super Bowl on Sunday was part of an effort by the 81-year-old's reelection campaign to reach younger voters, and included a reference to the quirky meme of a laser-eyed Biden alter-ego.

But Republicans have criticised Democrat Biden for using an app that is banned on US federal government devices over fears it harvests data for Beijing.