I find this 'Israel is an ally' American idea interesting.
The Jewish Virtual Library (not exactly anti-Israel) lists US aid to Israel up to 2014 as $120,472 million. Adjusted for inflation, it'd be a great deal more. For example, the $2646.3 mn given in 1974 was 21% of Israel's GDP, & worth about $9.5 billion at 2011 prices. There's also been a huge amount of technical assistance, which has greatly boosted Israeli technological capability & indirectly its economy.
The question is, what has Israel done on its side? Sold military technology (some of it developed with US money & assistance) to China, poisoned US relations with much of the Middle East (why do so many Arabs see the USA as an enemy? Ask them & they almost all say "Israel"), & a sustained attack on a clearly marked US sigint ship killing 34 crew & injuring 171 immediately spring to mind. Israel has provided intelligence, but a lot's been against countries which might have been friends of the USA if they'd not been enemies of Israel.
Israel's a truculent & difficult friend who's always getting into scrapes & having to be bailed out, a client, not an ally.