Department of Justice associated with processing cases under the National Childhood Vaccine Injury Act of 1986, not to exceed $10,000,000, to be appropriated from the Vaccine Injury Compensation Trust Fund. Salaries and expenses, antitrust division For expenses necessary for the enforcement of antitrust and kindred laws, $164,977,000, to remain available until expended: Provided , That notwithstanding any other provision of law, fees collected for premerger notification filings under the Hart-Scott-Rodino Antitrust Improvements Act of 1976 ( 15 U.S.C. 18a ), regardless of the year of collection (and estimated to be $126,000,000 in fiscal year 2018), shall be retained and used for necessary expenses in this appropriation, and shall remain available until expended: Provided further , That the sum herein appropriated from the general fund shall be reduced as such offsetting collections are received during fiscal year 2018, so as to result in a final fiscal year 2018 appropriation from the general fund estimated at $38,977,000. Salaries and expenses, united states attorneys For necessary expenses of the Offices of the United States Attorneys, including inter-governmental and cooperative agreements, $2,057,252,000: Provided , That of the total amount appropriated, not to exceed $7,200 shall be available for official reception and representation expenses: Provided further , That not to exceed $25,000,000 shall remain available until expended: Provided further , That each United States Attorney shall establish or participate in a task force on human trafficking. United states trustee system fund For necessary expenses of the United States Trustee Program, as authorized, $225,908,000, to remain available until expended: Provided , That, notwithstanding any other provision of law, deposits to the United States Trustee System Fund and amounts herein appropriated shall be available in such amounts as may be necessary to pay refunds due depositors: Provided further , That, notwithstanding any other provision of law, fees