US lawmakers demanded Thursday that the United Nations impose tighter controls on the UN agency that manages aid to the Palestinians to ensure no US funds end up in the pockets of extremists. "The United Nations should take immediate steps to improve the transparency and accountability of the United Nations Relief and Works Agency for Palestinian Refugees (UNRWA)," said Democratic Representative Steve Rothman. [...] Republican Representative Mark Kirk blasted UNRWA's accounting practices as likely to enable the Palestinian military group Hamas to syphon off some of a new US aid pledge of 900 million dollars for the West Bank and Gaza. If the group managed to grab 10 percent of that package, "the United States taxpayer would be then the number-two financial supporter of Hamas after the government of Iran," he said. Kirk said he would rather see the funds go through the US Agency for International Development, the World Food Program, or the UN High Commissioner for Refugees. "If we insist on providing these funds we should provide them to reputable foreign assistance organizations who are operating under American standards of transparency and accountability," he said.