Useful Links
US Department of State
Travel information home page: http://travel.state.gov
STEP - Smart Traveler Enrollment Program: https://step.state.gov/step
Passports: https://travel.state.gov/content/passports/en/passports.html
Country Information: http://travel.state.gov/content/passports/english/country.html
Traveler's Checklist: http://travel.state.gov/content/passports/english/go/checklist.html
US Embassy and Consulate Finder: https://www.usembassy.gov/
Customs and Border Protection
US Customs information: https://www.cbp.gov/travel/us-citizens/know-before-you-go
Trusted Traveler Programs - TSA Precheck, Global Entry, Nexus, Sentri: https://www.cbp.gov/travel/trusted-traveler-programs
TSA
TSA - Travel Tips: https://www.tsa.gov/travel/travel-tips
TSA - What can I bring?: https://www.tsa.gov/travel/security-screening/whatcanibring/all