David Boim was standing at a bus stop in a West Bank town near Jerusalem 12 years ago when terrorists opened fire, fatally shooting the 17-year-old American teenager.

A lawsuit filed by his parents has been dragging through the courts for eight years as attorneys argue the central issue: who must pay damages.

A federal appeals court is still trying to come up with the answer.

Last December, the 7th U.S. Circuit Court of Appeals threw out a lower court's order requiring several U.S.-based Islamic groups to pay $156 million to Boim's family — who claim money the groups gave to Palestinian charities ultimately helped fund terrorism.

But now the appeals court is second-guessing itself and revisiting the emotionally charged case, the first filed under a 1991 law allowing American victims of international terrorism to recover triple damages.

During an extraordinary "en banc" hearing before all 10 sitting judges last week, the case came in for a fresh airing. How much longer the case will go on is anyone's guess.