The language barrier there isn't merely an inconvenience. The English-Spanish debate has been contentious there before
In 1991 the government of Puerto Rico, under the administration of PPD's Rafael Hernández Colón, made Spanish its sole official language through a law that was commonly called the "Spanish-only Law." In recognition of the historical defense of the Spanish language and culture, the Spanish Monarchy awarded Puerto Rico the Principe de Asturias' Prize that same year. On 4 January 1993, the 12th Legislative Assembly, with the support of the newly elected PNP government of Pedro Rosselló González passed Senate Bill 1, establishing both Spanish and English as official languages of the government of Puerto Rico.
In 2009, the grassroots community cultural organization Unidos por Nuestro Idioma ("United for our language"), whose goal is "defending Spanish in Puerto Rico", expressed concern that the use of English terms on official road signs reading "Welcome to Guaynabo City", and on mass transit ("City Hall" and "Downtown") as well as police cruisers ("San Juan Police Department") were evidence of the English language replacing Spanish in official use. The group advocates the defense and use of Spanish in Puerto Rico. The group states it is not against the use of English, recognizing the importance of Puerto Ricans learning it, but states that it should not displace Spanish.
This would be the first state where English was not the predominant language of its population. The 2000 census found very few people there speak English
Both Spanish and English are the official languages of Puerto Rico, but Spanish is without a doubt the dominant language, as the majority of the people in Puerto Rico are not proficient in English. Fewer than 20 percent of Puerto Ricans speak English fluently, according to the 2000 U.S. Census.
Hawaii, by contrast, had been forced by the US government to switch long before it became a state so it never really became as large an issue. There would be increased pressure to have more English taught and used.