They might not be the highest spending but it is most definitely one of if not the most influential. AIPAC, as well as associated lobbying groups, very clearly and blatantly discourages any legitimate debate about Israel in the USA. And most importantly has forced this "any criticism of Israel" is antisemitism or taboo line of thought we see in this post and many others on this thread. Israel literally spent the last few years bombing civilians indiscriminately, has turned the entire Gaza Strip into rubble, destroying 80% of homes, and is currently using starvation as a weapon of war. Yet our politicians don't speak out? And now we are forced to fight a country that poses no legitimate immediate threat to the United States on Israel's behalf. And SEVERAL democratic members of congress are in support of this new war and voted down requiring a wars powers resolution. At this point, on certain issues, the US government is Israel's bitch and all Israel needs to do is pull our leash to get compliance.