That's just a tad bit of a simplification, MSH.
Let me lay out the range of reasons why I have issues with the U.S. supporting Israel:
1. The influence of AIPAC. They're easily one of the top-three of the most important campaign contribution organizations in the U.S., alongside the AARP, and they explicitly exist for no reason other than promoting Israeli interests. That's the biggest reason why no U.S. politician with a hope of being elected will say anything against Israel (the other main one being that the Zionists are very quick on the trigger when it comes to the anti-Semitic tar brush, more on that later).
If any other foreign state or entity had that sort of influence on our government, do you know what the shitstorm would look like?
2. Supporting a successful warmongering country. Yes, I know, we have a truly fantastic track record on that account. And yes, I know, "Six Days War was a pre-emptive attack blah blah blah" -- the point is, one of the biggest arguments in favor of military aid to Israel is this extremely widespread notion of Israel being some poor, defenseless little country surrounded by all the big, bad Arabs...
They have won, decisively, every war they ever fought. They defeated every single country with which they share a land border in less than a week... decades ago, back when the Arabs had any sort of meaningful foreign military aid. They are the sole nuclear-armed power in the region. Et-fuckin'-cetera. I'm not arguing that they were wrong, precisely, to consolidate their holdings; it was pragmatic and probably necessary back then. Now, though? They're fine. But the pro-Israel lobby is too deeply entrenched to cut military support.
3. A lot of the Zionists are utter scumbags who wave the Holocaust around like a banner and instantly brand anyone who criticizes Israel as an anti-Semite. Y'know, the Jews had a fucking terrible history in Europe. But what I have a problem with now? All these fucking right-wing scumbags using the deaths of people they didn't even know to shield their own hawkish behavior from public outrage, especially when they're practicing their own brand of ethnic cleansing.
4. Nuclear weapons. I can't fault the Israelis for building them (though lying about that was pretty transparent, hah). But the most likely scenario in my eyes for nuclear war? It ain't India and Pakistan, and it ain't the DPRK managing to build a warhead and a functional missile, it's Iran managing to build nuclear weapons when Israel still has a Likud-lead coalition government willing to launch a pre-emptive strike.
Besides, if you're looking for someone to blame for the situation and Israel and Palestine, you don't look to the Israelis forcing Arabs out of their homes back in the day, or to the decades of sniping at each other across the border, or any of that shit, you go to the same place you always go when you're dealing with the fallout of imperialism: Britain and France. It was their uncoordinated promises and land-grabs back in the late 1910s that completely fucked up the region.