Here's a short story:

The United States has a racially and ethnically diverse population. The United States Census officially recognizes six racial categories: White American, Black or African American, Native American and Alaska Native, Asian American, Native Hawaiian and Other Pacific Islander, and people of two or more races; a category called "some other race" is also used in the census and other surveys, but is not official. The United States Census Bureau also classifies Americans as "Hispanic or Latino" and "Not Hispanic or Latino", which identifies Hispanic and Latino Americans as an "ethnicity" (not a "race") distinct from others that composes the largest minority group in the nation. 

The United States Supreme Court unanimously held that "race" is not limited to Census designations on the "race question" but extends to all ethnicities, and thus can include Jewish and Arab as well as Polish or Italian or Irish, etc. In fact, the Census asks an "Ancestry Question" which covers the broader notion of ethnicity initially in the 2000 Census long form and now in the American Community Survey. 

, white Americans are the racial majority. African Americans are the largest racial minority, amounting to 13.3% of the population. Hispanic and Latino Americans amount to 17.8% of the total U.S. population, making up the largest ethnic minority. The White, non-Hispanic or Latino population make up 61.3% of the nation's total, with the total White population (including White Hispanics and Latinos) being 76.9%. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What question does the Census ask about ethnicity?
Guess: Hispanic or Latino or not

Question: Who is the racial majority in America?
Guess: white Americans

Question: What is the biggest minority?
Guess: African Americans

Question: What amount of the population are they?
Guess: 13.3%

Question: What is the Ancestry Question?
Guess: it covers ethnicity

Question: What is it?
Guess: unknown

Question: What form was it originally on?
Guess: Census long form

Question: What is it on now?
Guess: the American Community Survey

Question: How many racial categories are currently recognized by the Census?
Guess: six

Question: Is there another category that is unofficial?
Guess: yes

Question: What is it?
Guess: some other race

Question: What is the category for someone of 2 races?
Guess: people of two or more races

Question: Can Jewish count as a race?
Guess: no

Question: What about Polish?
Guess: no

Question: What did the Supreme Court decide?
Guess: race is not limited to Census designations

Question: What are Hispanic and Latino considered?
Guess: an ethnicity

Now answer the following question in the same format.

Question: What percentage of the US population do they comprise?

17.8%