Mitch McConnel is tackling America’s biggest national security threat — TikTok. In a Senate speech Monday, McConnell implored his fellow senators to pass the bill requiring the Chinese company ByteDance to sell TikTok or face the app being banned from app stores within the United States. Passed by the House on March 13, the bill — officially known as the Protecting Americans from Foreign Adversary Controlled Applications Act — has stalled in the Senate.