<Tr> <Th> Long title </Th> <Td> An Act To amend the Immigration and Nationality Act to change the level, and preference system for admission, of immigrants to the United States, and to provide for administrative naturalization, and for other purposes . </Td> </Tr> <Tr> <Th> Enacted by </Th> <Td> the 101st United States Congress </Td> </Tr> <Tr> <Th_colspan="2"> Citations </Th> </Tr> <Tr> <Th> Public law </Th> <Td> Pub. L. 101--649 </Td> </Tr>

In 1949 caused congress to reverse more than a century of immigration quotas