Joe Biden mentioned that Abdel Fattah el-Sisi agreed that he would open the gates to let up to 20 trucks through to begin with.
The new sanctions target individuals based in Gaza and elsewhere, including Sudan, Turkey, Algeria and Qatar.
Joe Biden told Benjamin Netanyahu that the blast at the al-Ahli hospital in Gaza appeared to have been done by other team.
As of last Saturday, at least 3,200 people had died in the fighting, according to the most recent statistics.