"Chinese telecommunications companies, such as Huawei, have extensive ties with the Chinese Communist Party," said the letter. "As a result, this partnership between Google and Huawei could pose a serious risk to U.S. national security and American consumers."

The missive was signed by a bi-partisan group of lawmakers, including Senators Tom Cotton and Marco Rubio, along with Congress members Mike Conway, Liz Cheney and Dutch Ruppersberger. The legislators make the point that Google recently refused to renew its participation in Project Maven, an AI system that was created to improve US military drones. "While we regret that Google did not want to continue a long and fruitful tradition of collaboration between the military and technology companies," said the letter, "we are even more disappointed that Google apparently is more willing to support the Chinese Communist Party than the U.S. military."