Highlighting terms with stopwords

(from github.com/julianopcardoso)
When I do a term query isn’t highlighting the stopwords in results.

Term query: United States of America
Result: The United States of America (USA) is a country composed of 50 states…

How Can I solve it?
Help me.

Thanks in advance.

(from github.com/marevol)
You need to modify en/stopwords.txt.