"MEXICO VISA AVAILABILITY
MEXICO F2B: The level of demand during recent months has been extremely heavy, in particular for cases filed with the U.S. Citizenship and Immigration Services for adjustment of status processing. Therefore, it has been necessary to retrogress the February cut-off date to May 1, 1993 in an attempt to hold number use within the annual per-country limit. Further retrogression of this cut-off date cannot be ruled out.
MEXICO F2A: Continued heavy demand in the Mexico F2A category will require the retrogression of this cut-off date to hold number use within the annual numerical limit. Such action is likely to occur within the next few months."
- Department of State Publication 9514, CA/VO: January 8, 2014