English is the U.S.'s national and common language. But that may change over time unless we change our assimilation norms. Making English the official language is the first step toward establishing those norms. "Official" means the language of the government and its institutions. "Official" makes clear our expectations of acculturation. "Official" means that every citizen, upon entering America's most sacred political space, the voting booth, should minimally be able to identify the words President and Vice President and county commissioner and judge. The immigrant, of course, has the right to speak whatever he wants. But he must understand that when he comes to the U.S., swears allegiance and accepts its bounty, he undertakes to join its civic culture. In English.