What other standard must people meet if they wish to become naturalized american citizens?

A standard that must people meet if they wish to become naturalized american citizens is: Understand the principles of American government
This standard it aimed to make potential immigrants the Core value that held by the United States constitution so they can get a better understanding about their rights and obligation as American citizen

This is what i found on google “eightin 1997, the mccaughey septuplets were born in carlisle, iowa. multiple births of as many as eight babies have been born alive, the first set on record to the chukwu family in texas in 1998; one died and seven survived. in 2009, a second set, the suleman octuplets, were born in bellflower, california.” i was surprised about this . i don’t want to have that many babies .