; and (2) the period of such use. (f) Effective date The amendments made by this section shall take effect on January 1, 2020. 5. Updated report on certain Gulf War Illness study Not later than 180 days after the date of the enactment of this Act, the Secretary of Veterans Affairs shall submit to the Committees on Veterans’ Affairs of the House of Representatives and the Senate an updated report on the findings, as of the date of the updated report, of the Follow-up Study of a National Cohort of Gulf War and Gulf Era Veterans under the epidemiology program of the Department of Veterans Affairs. 6. Loans guaranteed under home loan program of Department of Veterans Affairs (a) Adjustment of loan limit Section 3703(a)(1) of title 38, United States Code, is amended— (1) in subparagraph (A)(i)(IV)— (A) by striking the lesser of ; and (B) by striking or 25 percent of the loan