Yes, you are correct. In 2014, tensions escalated between the U.S. and Israel over the fighting in Gaza. You might be referring to an incident where the United States reportedly paused a shipment of Hellfire missiles to Israel, marking a brief strain in relations. This was amidst international criticism over the high civilian death toll in Gaza, where Israel was engaged in conflict with Hamas.
The conflict included a particularly contentious incident in Rafah, a city in the Southern Gaza Strip, in which multiple civilians were killed. It was reported that the U.S. was issuing greater scrutiny to Israeli requests for weapons due to concerns about the extent of civilian deaths being caused by the Israeli operation in Gaza.
However, it’s important to note that this was a temporary measure during a specific situation and shouldn’t be taken as indicative of the overall U.S.-Israel relationship which includes significant military aid and cooperation. As of 2016, the U.S. signed a $38 billion military aid deal with Israel, the largest such agreement the U.S. has ever had with any country.
The U.S-Israel relationship continues to be a multi-faceted relationship and encounters occasional periods of tension. It’s recommended to always look at the most supplied sources for up-to-date information.