"What we need are critical lovers of America - patriots who express their faith in their country by working to improve it." 
Hubert H. Humphrey

Modern America
Immigration

An estimated 3.1 million American citizen children have at least one illegal alien parent.
Source: ProCon

"Immigration refers to the movement of people between countries. While the movement of people has existed throughout human history at various levels, modern immigration implies long-term permanent residence. Short-term visitors and tourists are considered non-immigrants (see expatriate). Immigration across national borders in a way that violates the immigration laws of the destination country is termed illegal immigration. Under this definition, an illegal immigrant is a foreigner who either illegally crossed an international political border, whether by land, water, or air, or a foreigner who legally entered a country but overstays his/her visa in order to live and/or work therein. Seasonal labour migration, while generally non-permanent in nature (typically for periods of less than a year), is often treated as a form of immigration. The United States is a nation of immigrants. All its people's ancestors come from around the globe."
Source: Wikipedia