The U.S. Senate voted 91-0 Friday for a resolution condemning the use of chemical weapons by Iraq in its Persian Gulf war with Iran. The resolution calls on the administration to "step up efforts" to secure an international ban on the use, production, development, stockpiling, transfer, and acquisition of chemical weapons. Sen. George Mitchell, D-Maine, recalled reports that Iraq used chemical weapons on March 16 against the Iranian-occupied city of Halabja in Iraq, killing possibly 2,000 civilians.