Watch CNBC's full interview with former Defense Secretary Ash Carter

A big vote is expected at the Federal Communications Commission on Tuesday that would block Huawei and ZTE from receiving federal money to help build broadband infrastructure. The two companies could be named as national security threats, which would block them from receiving anything from the $8.5 billion universal service fund the government offers to cell companies. Ash Carter, former U.S. Defense Secretary, joins CNBC's "Squawk Box" to discuss the vote, national security and China.