You did not provide a table, but I've answered this question to the best possible extent with the context you've given!
Year Event Effect on Immigration Policy
1965 Immigration and Nationality Act Abolished national-origins quotas, and introduced preference system based on immigrants' skills and family relationships.
1986 Immigration Reform and Control Act Provided amnesty for undocumented immigrants who entered the U.S. prior to 1982 and increased border enforcement measures.
1990 Immigration Act Increased legal immigration levels and created new categories of family-based and employment-based visas.
1996 Illegal Immigration Reform and Immigrant Responsibility Act Increased border enforcement and authorized deportation of certain non-citizen criminals.
2001 September 11 terrorist attacks Led to increased security measures at borders and airports, and greater scrutiny of visa applications.
2010 Deferred Action for Childhood Arrivals (DACA) Provided temporary protection from deportation and work authorization for certain undocumented immigrants who arrived in the U.S. as children.
2013 Senate immigration reform bill Proposed comprehensive immigration reform that would have provided a pathway to citizenship for undocumented immigrants, increased border security measures, and reformed the legal immigration system, but the bill was not passed by the House of Representatives.
2017 Executive Order travel ban Temporarily suspended entry of citizens from seven predominantly Muslim countries, and faced legal challenges before being revised and upheld by the Supreme Court.