It is the sense of Congress that the processing of an immigration benefit application should be completed not later than 180 days after the initial filing of the application, except that a petition for a nonimmigrant visa under section 1184(c) of this title should be processed not later than 30 days after the filing of the petition.
8 U.S. Code § 1571 - Purposes
For short title of title II of Pub. L. 106–313, which enacted this subchapter, as the “Immigration Services and Infrastructure Improvements Act of 2000”, see section 201 of Pub. L. 106–313, set out as a Short Title of 2000 Amendment note under section 1551 of this title.
For abolition of Immigration and Naturalization Service, transfer of functions, and treatment of related references, see note set out under section 1551 of this title.