So much for there being a backlog.
In 1999, the US government signed a Memorandum of Understanding through which it committed to providing Israel with at least US$2.67 billion in military aid annually, for the following ten years; in 2009, the annual amount was raised to US$3 billion; and in 2019, the amount was raised again, now standing at a minimum of US$3.8 billion that the US is committed to providing Israel each year.
https://en.wikipedia.org/wiki/Israel–United_States_relations#:~:text=In 1999%2C the US government,now standing at a minimum