As far as I know they did not renounce their US citizenship and some of them receive welfare payments from uncle Sam to this day.
They did renounce their US citizenship & they are recieving Israeli welfare/bituach leumi payments.
At some point maybe they got it back but at one point they did renounce.
FYI,You can not recieve US welfare payments outside the US,social security retirement yes & social security disabilty but not welfare.
Welfare is a state program.
I have been following these chalyeras for years & know what is going on