If you were out of status for more than one year, when you left for Mexico, you triggered the 10-year bar. You state that you had an overstay of 73 days and when you left for Mexico, you then triggered the 3-year bar. You will need to stay in Mexico for 3 years (provide proof of this when you reapply for another H-1B visa or another benefit). You do not mention facts that would make you eligible for a waiver, such as having U.S. Citizen or Lawful Permanent Resident parents or spouse.
I'm not sure which reform you are asking about but the 3-year bar still exists.
Answered on May 27th, 2013 at 5:32 PM