Because surely you suck at math. By your logic, if every woman, man and child in the US (300 million people) give Israel $1500, then Israel would be getting 450 BILLION dollars a year. Your math is off by a multiple of more than one hundred. The widely known figure is closer to 3.5 billion, which is little more than 10 dollars a year per american, a far cry from 1500. Go back to school.
UN agency warns school may be delayed for Palestinian refugees due to lack of funding (AP)