In recent days, the White House sent a notification of the deals to Congress for approval, five sources said on Monday.
The Trump administration’s arms sales to Taiwan encompasses three sales of advanced weaponry.
The move in the run-up to the November 3 Election Day, first reported by Reuters, is likely to anger China, which considers Taiwan a wayward province that it has vowed to reunite with the mainland, by force if necessary.
Reuters broke the news in September that as many as seven major weapons systems were making their way through the US export process as the Trump administration ramps up pressure on China.
Leaders of the Senate Foreign Relations and House of Representatives Foreign Affairs committees were notified that three of the planned weapons sales had been approved by the US State Department.
The State Department oversees foreign military sales, said the sources, who are familiar with the situation but declined to be identified.
The informal notifications of arms sales to Taiwan were for a truck-based rocket launcher made by Lockheed Martin Corp called a High Mobility Artillery Rocket System (HIMARS), long-range air-to-ground missiles made by Boeing Co called SLAM-ER, and external sensor pods for F-16 jets that allow the real-time transmission of imagery and data from the aircraft back to ground stations.