Traveling with a passport or passport card is ideal. If you do not have that, you do need proof of citizenship (the original or certified copy of your birth certificate) and identification (driver’s license); US citizens under 16 years old do not need a driver’s license, just the proof of citizenship. If you are a citizen of a country outside the U.S., please check with the consulate of your country to determine exactly what is needed to visit the United States and the Bahamas.