“This is outrageous and is a first step toward the US becoming not a bilingual country but a polyglot country.”
I think it much more likely that the US is becoming a Spanish-speaking country; they are a large majority of the under-20 demographic.
I don’t think the US will become solely Spanish-speaking, or at least not for a very long time. It could well become bilingual: English/Spanish. The reason I said it might become polyglot is that if libs had their way employers would not be able to require anyone they hire to speak English; therefore,speakers of any language could not be discriminated against, not just Spanish speakers. and US Government publications are already being published in a number of languages other than English.