The United States stands tall, representing a parade of nations, 300 million strong. That number will grow during today's citizenship ceremony, featuring the national anthem performed by pop star Gloria Estefan. She captures the essence of what makes this country so great: Ms. Estefan arrived from Cuba as a 2-year-old and would eventually chase her amitions of becoming a singer. She would incorporate salsa into mainstream American music, reflecting the true meaning of this country as a melting pot.