An U.S. senator plans to introduce legislation to streamline regulation and permitting requirements for the development of mines for lithium, graphite and other electric-vehicle supply chain minerals, part of a plan to offset China’s dominance in the space.

While Tesla Inc, Volkswagen AG and other electric-focused automakers and battery manufacturers are expanding in the United States, they are reliant on mineral imports without a major push to develop more domestic mines and processing facilities.

U.S. Senator Lisa Murkowski, the Alaska Republican who is chair of the Senate’s Energy and Natural Resources Committee, told Reuters she will introduce the Minerals Security Act alongside Senator Joe Manchin, a West Virginia Democrat. “Our challenge is still a failure to understand the vulnerability we are in as a nation when it comes to reliance on others for our minerals,” Murkowski said.

China already dominates the electric-vehicle supply chain. It produces nearly two-thirds of the world’s lithium-ion batteries – compared with 5 percent for the United States – and controls most of the world’s lithium processing facilities, according to data from Benchmark Minerals Intelligence, which tracks prices for lithium and other commodities.