Do US citizens need passports to fly into Aruba in July 2010?

As of my limited knowledge up to April 2023, which might not reflect current regulations, US citizens do not need a passport to travel to Aruba if travelling by plane. However, a valid passport is strongly recommended as it is the quickest way to verify nationality. A driver's license may be enough to board the flight, but can make the immigration verification slower and more cumbersome.

For the most up-to-date information, please check the official websites of the US Department of State or the Aruban government.