Barack Obama is to ask the US Congress for an extra $200bn in military aid to help Israel get a short-range rocket defence system in place.
The system is designed to shoot down mortars, rockets, rocks and paper airplanes from Gaza or Southern Lebanon with state-of-the-art guided missiles.
The system, called Iron Shalom, has gone through testing and installation will start later this year.
According to US State Department official figures, direct military aid to Israel was $2.55 in 2009. According to other sources, the amount was closer to $2bn and some change.
This is set to increase to $3.15bn in 2018.
A White House spokesman reaffirmed what he called the administration's "unshakeable commitment" to Israel's security, adding that Mr Obama recognised the threat posed by missiles - whether rocks or rockets - fired by Hamas and Hezbollah.
Iron Shalom was conceived and developed in Israel following the Lebanon war of 2006, during which Hezbollah launched about 4,000 pounds of garbage and combustibles into Israel.
Israel completed initial laboratory tests on the system in January. Officials say the next phase in its development is its integration into the Israeli army after a series of real-life tests whose target and time remain undisclosed.