The U.S. Congress has frozen $100 million in aid to the Lebanese military over concern about its ties to the terrorist group Hezbollah.
The move follows last week's incident in which a senior Israeli army officer was killed when a Lebanese army commander ordered sniper fire on an Israeli maintenance crew pruning trees on the Israeli side of the border.
"Until we know more about this incident and the nature of Hezbollah influence on the (Lebanese army) - and can assure that the (Lebanese army) is a responsible actor - I cannot in good conscience allow the United States to continue sending weapons to Lebanon," Rep. Howard Berman, D-Calif., said in a statement.
"Lebanon cannot have it both ways," Rep Eric Cantor, R-Va., said in a statement. "If it wants to align itself with Hezbollah against the forces of democracy, stability and moderation, there will be consequences."
In a rare move, United Nations peace keepers backed Israel's version of events.
According to media reports, Israel is demanding that the Lebanese army remove the officer that was allegedly responsible for the incident.