251(b)(2)(A)(i) of such Act. Department of Health and Human Services Administration for Children and Families refugee and entrant assistance For an additional amount for Refugee and Entrant Assistance $2,881,552,000, to be merged with and available for the same period as funds appropriated in Public Law 115–245 for carrying out section 414 of the Immigration and Nationality Act, section 501 of the Refugee Education Assistance Act of 1980, section 462 of the Homeland Security Act of 2002, and section 235 of the William Wilberforce Trafficking Victims Protection Reauthorization Act of 2008: Provided , That such amount is designated by the Congress as an emergency requirement pursuant to section 251(b)(2)(A)(i) of the Balanced Budget and Emergency Deficit Control Act of 1985: Provided further , That the amount provided under this heading shall be available only if the President designates such amount as being for an emergency requirement pursuant to section 251(b)(2)(A)(i) of such Act. Department of Homeland Security Security, Enforcement, and Border Protection U.S. Customs and Border Protection operations and support For an additional amount for Operations and Support for necessary expenses to respond to the significant rise in unaccompanied minors and family unit aliens at the southwest border and related activities, $479,528,000