The measure enhances security ties between the two allies . It also supports American support for Israel 's Iron Dome missile defense system . Mitt Romney traveled to Israel on Friday to meet with leaders there . At the signing , Obama was flanked by the two California Democrats who were sponsors -- Sen. Barbara Boxer and Rep. Howard Berman -- as well as top figures of American Jewish organizations . Democratic opponents of the bill deny any political mischief in the timing of Friday 's event .
The measure enhances security ties between the two allies . It also supports American support for Israel 's Iron Dome missile defense system . Mitt Romney traveled to Israel on Friday to meet with leaders there . Democratic opponents of the bill deny any political mischief in the timing of Friday 's event .