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Subject
- Government policy[remove]48
- Prevention20
- National security19
- Western Hemisphere Travel Initiative (U.S.)18
- Drug control13
- Drug traffic13
- International travel regulations13
- International cooperation12
- Relations11
- Border security8
- Passports8
- Ports of entry8
- Security measures8
- State-sponsored terrorism8
- Terrorism8
- Free trade7
- Boundaries6
- Commerce6
- Drug abuse6
- Economic aspects6