At the federal level, what is the official language of the USA?

The United States has never had an official language at the federal level. However, 32 states of the United States, in some cases as part of what has been called the English-only movement, have adopted legislation granting official status to English. Out of 50 states, 30 have established English as the only official language, while Hawaii recognizes both English and Hawaiian as official, and Alaska has made some 20 native languages official, along with English; for example, Alaska provides voting information in English, Iñupiaq, Central Yup'ik, Gwich'in, Siberian Yupik, Koyukon, and Tagalog. On July 1, 2019, a law went into effect making Lakota, Dakota, and Nakota the official indigenous languages of South Dakota.

Moreover, English is one of the official languages in all of the U.S. territories. In Puerto Rico, both English and Spanish are official, although Spanish has been declared the principal official language. The school system and the government operate almost entirely in Spanish. Guam recognizes English and Chamorro. In the U.S. Virgin Islands, English is the only official language. In American Samoa, both English and Samoan are officially recognized. In the Northern Mariana Islands, English, Chamorro, and Carolinian are official.