Yes, it is our understanding that driver's licenses from the American Samoa is valid in the United States for you to operate a vehicle. States when speaking of US licenses many times also note this means US Territories include American Samoa, Guam, the U.S. Virgin Islands, Puerto Rico, the Federated States of Micronesia, and the Midway Islands.
For example Hawaii's DMV says that any person 18 years of age or older holding a valid driver's license issued in any other state of the United States, the District of Columbia, the Commonwealth of Puerto Rico, U.S. Virgin Islands, American Samoa, Guam, a province of the Dominion of Canada, or the Commonwealth of the Northern Mariana Islands is exempt from obtaining a Class 1, 2 or 3 Hawaii driver's license.
If you are from the American Samoa you are not a US citizen but are nonetheless are a US national. The Read ID Act that was passed in the United States notes that when it uses the term "State'' it means a State of the United States, the District of Columbia, Puerto Rico, the Virgin Islands, Guam, American Samoa, the Northern Mariana Islands, the Trust Territory of the Pacific Islands, and any other territory or possession of the United States. As you are likely aware by 2010, every local driver in American Samoa must be armed with a new driver's license (referred to as an ASDL), which is made to comply with Real ID standards.
If you want to drive in a certain state within the US for a certain length of time with an American Samoa driver's license you should check with their Department of Motor Vehicles for information on how long you can drive with it and if there are any certain conditions. If you are moving to a State within the US than check with the DMV of that State about what it takes to consider you a resident of that state and what you are required to do in order change over your American Samoa license for a State license.
For example Connecticut says that a license from American Samoa, Guam, Puerto Rico or U.S. Virgin Islands is the same as an out of state license so for exchanging it for a CT driver's license has the same requirements as such; however, you must obtain an abstract of your driver record from your home territory prior to transferring your license to Connecticut.