June 14, 2019—The Trump administration is trying to block the use of Chinese technology in advanced vehicles, according to a report by Reuters.

The administration has denied additional requests by Tesla for tariff relief on key components of its electric vehicles, and rejecting ride-hailing company Uber’s petition to waive tariffs on electric scooters and at least 50 separate requests by General Motors.

After the U.S. slapped 25 percent tariffs on $50 billion of Chinese imports last year under the two countries’ trade dispute, the U.S. Trade Representative (USTR) allowed companies to petition for exemptions.

The more than 50 requests by GM rejected by USTR were for exemptions from Chinese-made parts used in vehicles including electronic controllers used for high voltage battery controls in hybrid and electric vehicles. It also rejected GM requests for high frequency antennas, push-button ignition switches, battery cables, electric motor parts and brake parts.