U.S. Senator Patrick Leahy is promoting a bill to suspend U.S. assistance to three elite Israel Defense Forces units, alleging they are involved in human rights violations in the West Bank and Gaza Strip. Leahy, a Democrat and senior member of the U.S. Senate, wants assistance withheld from the Israel Navy's Shayetet 13 unit, the undercover Duvdevan unit and the Israel Air Force's Shaldag unit. (Snip) According to a senior Israeli official in Jerusalem, Leahy began promoting the legislation in recent months after he was approached by voters in his home state of Vermont.