Modifications
Parts of the Act remain in place today, but it has been amended many times and was modified substantially by the Immigration and Nationality Services Act of 1965.
Twelve years after the promulgation of the regulations at issue in Haig v. Agee, Congress enacted section § 707(b) of the Foreign Relations Authorization Act, Fiscal Year 1979 (Pub.L. 95-426, 92 Stat. 993, enacted October 7, 1978), amending § 215 of the Immigration and Nationality Act making it unlawful to travel abroad without a passport. Until that legislation, under the Travel Control Act of 1918, the president had the authority to require passports for foreign travel only in time of war.
As a result of the September 11, 2001 attacks, the Act underwent a major restructuring beginning in March 2003 and its provisions regarding the admissibility and removability of terrorist suspects has received much media and scholarly attention.
Read more about this topic: Immigration And Nationality Act Of 1952