| http://www.w3.org/ns/prov#value | - A good benchmark would be 1965, the year when U.S. immigration laws were thoroughly liberalized and much higher and more geographically diverse quotas superseded the restrictive legislation of 1924.Estimating the precise proportion of U.S. population growth since 1965 due to immigrants and their descendants is a little trickier than one might think, however.
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