Yup, with good reason. This is because the USA didn't want all those F-4s still in service with foreign operators being turned into a cheaper way of creating a high performance replacement for the F-4, because it wanted to sell F-15s to them.
I do recall that the sale of the F-15 to Israel negated the development of the Kurnass 2000, which was developed because Israel believed it couldn't afford to shop externally for an F-4 replacement. The official reason behind the Kurnass 2000's demise was put at the cost of refurbishing the Israeli Phantoms, but the deal to buy the F-15 was probably so good that Israel would have been foolish to ignore it. The same goes for the sale of F-16s to Israel with the development of the Lavi, which IAI wanted to build as a replacement to the A-4 and Kfir - IAI could have in effect marketed the Lavi as a cheap F-16 alternative had it been continued.