What is the Insurrection Act? Why is the US Fed chair criminal probe causing alarm? The United States House of Representatives Foreign Affairs Committee has overwhelmingly voted to advance a bill that would give Congress more power over artificial intelligence chip exports despite pushback from White House AI tsar David Sacks and a social media campaign against the legislation. Representative Brian Mast of Florida, a Republican and the chair of the House Foreign Affairs Committee, introduced the "AI Overwatch Act" in December after US President Donald Trump greenlit shipments of Nvidia's powerful H200 AI chips to China. The bill claims that those "countries of concern" also include countries beyond China, such as Russia, Iran, North Korea, Cuba and Venezuela.

Social media giants are tracking your every move, scooping up huge amounts of personal data from armies of unwitting users - but some are guilty of hoovering up more information than others. TikTok is the biggest data harvester, collecting more than any other social media app or messaging service, according to a study by cyber security firm Internet 2.0. Owned by Chinese firm ByteDance, the popular video-sharing app has around a billion active users worldwide. But it has more than double the number of trackers in its source code than the industry average. TikTok's tracking software surreptitiously gathers data about users to fine tune the algorithm running its main feed.