I'm assuming this is with regards to Israel. It's true in the sense that Israel is supported with billions in cash, arms transfers, logistics, and diplomatic cover and in return elements of the ruling class both in that country and which straddle it and others interfere in US elections in favor of those who facilitate that status quo.
It's a feedback loop like many situations, and there may be a tipping point where the US government tries to credibly round up Mossad and try to blame Israel for official actions of our state - but I've always figured that'd only happen when Nuremberg 2 is at hand.