Part of the reason these universities want you to take courses in the humanities and social sciences and other areas, is because they don’t want one-dimensional graduates from their universities.
A number of US schools expect students to be diverse in their studies. The colleges also want to have employable graduates.
Corporate employers want people to step out of your comfort zones and have outside experiences.
They want their graduates to be comfortable in discussing: paintings at museums interspersed with discussions of Taoism. When someone says “je ne sais quoi/Que tal?”They expect you to have familiarity with some phrases outside of your language.
If you strictly want to stay within your discipline then I suggest you not apply to US schools.