- Customs and Border Patrol travel and trade advisories.
- Department of Homeland Security has information on arrival restrictions for certain foreign nationals, restrictions for Canada and Mexico border crossing, and news and updates.
- Department of State has advisories for international travelers.
- Federal Aviation Administration (FAA) offers guidance for air travelers.
- Federal Transit Administration (FTA) offers guidance to transit agencies.
- Transportation Security Administration published a map of where TSA agents have tested positive for COVID-19.
- U.S. Citizenship and Immigration Service (USCIS) has information about office closings, appointments and events.