Theodore Roosevelt delivered a speech in 1915 warning of "hyphenated Americans" who maintain stronger allegiances to foreign countries than to the United States. He argued that the only way for the US to succeed is for citizens to prioritize their duty to America over individual rights or foreign identities. Roosevelt defined hyphenated Americans as those who vote or feel sympathy based on their ethnicity rather than as singularly American. He called for immigrants to be given rights as citizens but also to fulfill their duties, such as learning English. Roosevelt saw Americanization of immigrants as key to national unity and preparedness.