; or (iii) has ceased to be continuously present in the United States since June 15, 2012. (i) Treatment of certain breaks in presence (1) In general An alien shall be considered to have failed to maintain continuous presence in the United States under subsections (a)(1) and (h)(2)(B)(iii) if the alien has departed from the United States for any period in excess of 90 days or for any periods in the aggregate exceeding 180 days, unless such departure was authorized by the Secretary of Homeland Security. (2) Exception An alien who departed from the United States after the date of the enactment of this Act shall not be considered to have failed to maintain continuous presence in the United States if the alien’s absences from the United States are brief, casual, and innocent, whether or not such absences were authorized by the Secretary. (3) Extensions for exceptional circumstances The Secretary of Homeland Security may extend the time periods described in paragraph (1) if the alien demonstrates that the failure to timely return to the United States was due to exceptional circumstances. Exceptional circumstances sufficient to justify an extension may include the serious illness of the alien, or death or serious illness of a spouse, parent, grandparent, sibling, or child. 4. Availability of immigrant visas (a) Temporary reallocation of certain visas Beginning in the first fiscal year in which an immigrant visa is needed under section 3(a)(5) for an alien who is the beneficiary of an approved application for relief under section 3, the visas described in subsection (b) that are otherwise available for the aliens described in such subsection shall be reallocated as necessary for purposes of making visas available under section 3(a)(5). (b) Visas described For each fiscal year, the visas described in this subsection are the following: (1) Visas otherwise allotted to the brothers and sisters of citizens of the United States under section 203(a)(4) of the Immigration and Nationality Act ( 8 U.S.C. 1153(a)(4) ). (2) Visas