US has slammed the proposed Israeli bill on settlements in occupied West Bank as troubling step and hoped it will not be passed to become law. <br/><br/>State Department spokeswoman, Elizabeth Trudeau, told a briefing in Washington that the US is deeply concerned about the new legislation that allows legalization of illegal Israeli outposts on private Palestinian land. <br/><br/>She said these settlements endanger prospects for a two-state solution and Israeli-Palestinian peace.