Law also known as "Hart - Seiler Act" (Hart-Celler Act), which abolished since 1920 immigration law "nationality quota" policy-oriented, and professional competence and the family as a U.S. citizen priority, the annual limit immigration to 170,000 people, but does not include immediate family members of U.S. citizens or special immigrants. Law by the State of New York on behalf of Salem Emanuel Celler and Michigan Senator Hart, Philip Hart proposal and was Massachusetts Senator Ted GanNetti Ted Kennedy support, is the most important immigration law over the years.

Act in the House of Representatives and the Senate then begin with more than 80% of the overwhelmingly approved, October 3, 1965, President Lyndon Johnson signed the proposal, he said: "The old immigration policy violates the principles of American democracy, but also violation of immigration to the United States when the ancestors of the faith. "Law on July 1, 1968 into effect, until today.

Law of Historical Context: 1961 second-generation Irish American President John F. Kennedy was elected, the Irish community was hoping that he can reform immigration policies more conducive to Irish immigrants. At that time his brother as Attorney General Robert Kennedy, Ted Kennedy, brother of another first elected senator in 1962, and their important task is to determine if this law passed in the Senate. Ted Kennedy in the Senate to defend the case, said that first, the case will not squeeze into the United States each year millions of immigrants, and the second, the United States will not change the ethnic composition, and finally, it will not let the Americans out of work .

Law eventually changed the ethnic composition of the United States. After the passing of this Act, the number of migrants between the growth in 1965-1970 doubled between 1970 and 1990 and then doubling; while the immigrant population mainly from Europe, Asia and Central and South America who turn out to be based.

"Boston Globe" reported: "Obama will become U.S. president, should be attributed to this Act; Obama will win, because the last few decades the percentage of white Americans reduced." Rosenberg authors of this article SimonRosenberg said: "The importance of this little-known bill that would put the United States in the future with the past to a different demographic composition of a new era." This is Ted Kennedy when spoken completely different.

Scholar Gabriel J. Chin , said: "1965" Immigration Act ", is the immigration law within the civil rights revolution, it's with the 1964" Civil Rights Act "and 1965's" Voting Rights Act ", tied for the most important recent bill. "Since the 1965 Act to modify a lot of times, but its structure continues to this day, from the abolition of" race "and" national origin "to start, it created a" new Americans. "