; or (B) was 40 years old or older when the borrower entered the agricultural student loan forgiveness program, and that borrower fails to be employed full-time as an employee or manager of a qualified farm or ranch for a cumulative period of more than 3 years after entering the program. (2) Exception for military service The Secretary shall not consider any of the following as a period of time counting toward removal from the agricultural student loan forgiveness program for purposes of paragraph (1): (A) Time serving on active duty during a war or other military operation or national emergency. (B) Time performing qualifying National Guard duty during a war or other military operation or national emergency. (C) The 180-day period following the demobilization date for the service described in subparagraph (A) or (B). (3) Readmission prohibited The Secretary shall not allow a borrower who has been removed from the agricultural student loan forgiveness program under this section to be readmitted to the program, unless the Secretary finds that the borrower has experienced exceptional circumstances. (e) Eligible Federal Direct Loan The term eligible Federal Direct Loan means a Federal Direct Stafford Loan, Federal Direct PLUS Loan, or Federal Direct Unsubsidized Stafford Loan, or a Federal Direct Consolidation Loan. . (b) Regulations Not more than 180 days after the date of enactment of this Act, the Secretary of Education, in consultation with the Secretary of Agriculture, shall promulgate final regulations to carry out this section, including regulations relating to the process of tracking and verifying work as an employee or manager of a qualified farm or ranch for purposes of section 460A of the Higher Education Act of 1965 (as added by this Act).