Defending America's 5G Future Act This bill prohibits transactions involving the information and communications technology of a foreign adversary when such transactions pose undue risks involving sabotage or subversion, catastrophic effects on critical U.S. infrastructure or the digital economy, or U.S. national-security or foreign-policy interests. Additionally, the bill prohibits the removal of Huawei Technology Co. Ltd. (Huawei) from the list of entities subject to certain license requirements for exports and authorizes Congress to disallow any export licenses granted to Huawei or its subsidiaries or affiliates.