Because its part of the terms of the Camp David Accords. https://en.wikipedia.org/wiki/Camp_David_Accords#Framework_Peace_Treaty_Egypt_and_Israel https://en.wi

Because its part of the terms of the Camp David Accords. https://en.wikipedia.org/wiki/Camp_David_Accords#Framework_Peace_Treaty_Egypt_and_Israel https://en.wikipedia.org/wiki/Camp_David_Accords#Framework_P... "The agreement also resulted in the United States committing to several billion dollars worth of annual subsidies to the governments of both Israel and Egypt, subsidies which continue to this day, and are given as a mixture of grants and aid packages committed to purchasing U.S. materiel."