Here's a breakdown of why it's complex:
* Official Language: While English is the de facto official language of the United States, there is no official federal law declaring it so.
* Linguistic Diversity: The US is incredibly diverse, with many people speaking languages other than English at home. The 2019 US Census found that over 67 million people spoke a language other than English at home.
* Varying Levels of Proficiency: Even those who speak English at home may have varying levels of fluency. Some may be bilingual, while others may have limited English proficiency.
Therefore, while it's safe to say a vast majority of Americans speak English, pinning down an exact percentage is difficult.
Instead of focusing on a percentage, it's more important to recognize the linguistic diversity of the US and the importance of providing resources and support for all language speakers.