US HB6309

Requires the President, through the National Cyber Director, to designate foreign persons and foreign government agencies as "critical cyber threat actors" for state-sponsored cyber activities that threaten U.S. national security, critical infrastructure, financial stability, or election processes

Mandates creation of a National Attribution Framework within 180 days to establish uniform criteria for attributing state-sponsored cyber attacks, including evidentiary standards, confidence levels, and coordination procedures with allied nations

Authorizes extensive sanctions against designated threat actors including blocking property and financial transactions, prohibiting securities trading, terminating defense sales, restricting export licenses, and barring U.S. government procurement contracts

Imposes travel-related sanctions making designated individuals inadmissible to the United States and requiring immediate revocation of any existing visas or entry documentation

Allows additional sanctions against foreign governments that aid or direct designated cyber threat actors, including suspension of development and security assistance, opposition to international financial institution loans, and export restrictions on munitions and surveillance technology