; and (4) in subsection (d)(2), as redesignated— (A) in subparagraph (A), by striking subparagraph (B) and inserting subparagraphs (B) and (C) ; and (B) by adding at the end the following: (C) Severe marine debris events Notwithstanding subparagraph (A), the Federal share of the cost of an activity carried out under a determination made under subsection (c) shall be— (i) 100 percent of the cost of the activity, for an activity funded wholly by funds made available by a person, including the government of a foreign country, to the Federal Government for the purpose of responding to a severe marine debris event; or (ii) 75 percent of the cost of the activity, for any activity other than an activity funded as described in clause (i). . 102. Sense of Congress on international engagement to respond to marine debris It is the sense of Congress that the President should— (1) support research and development on systems and materials that reduce— (A) derelict fishing gear; and (B) the amount of solid waste that is generated from land-based sources and the amount of such waste that enters the marine environment; (2) work with representatives of foreign countries that discharge the largest amounts of solid waste from land-based sources into the marine environment, to develop mechanisms to reduce such discharges; (3) carry out studies to determine— (A) the primary means of discharges referred to in paragraph (2); (B) the manner in which waste management infrastructure can be most effective in preventing such discharges; and (C) the long-term impacts of marine debris on the national economies of the countries with which work is undertaken under paragraph (2) and on the global economy, including the impacts of reducing the discharge of such debris; (4) work with representatives of the countries with which work is undertaken in paragraph (2) to conclude one or more new international agreements that include provisions— (A) to mitigate the discharge of land-based solid waste into the marine environment