Sent_en: 2zh The study seems to also hint that this growth is in many ways connected to legislation passed by Congress in 1965, that abolished a quota system that had nearly ended immigration from non-European countries since the 1920s, and consequently caused an immigration surge.
Sent_yy: 这项研究似乎还暗示，这种增长在很多方面与1965年国会通过的一项立法有关。1965年，国会废除了一项配额制度，该制度自上世纪20年代以来几乎终止了来自非欧洲国家的移民，并因此导致了移民潮。