Biden privately has been critical of Netanyahu over Israel's "indiscriminate" bombing of Gaza, according to news reports.
Meals dropped over Gaza
The United States military airdropped food and aid over Gaza Saturday - the first round of emergency humanitarian assistance authorized by Biden, U.S. officials said.
Palestinians posted videos on social media showing boxes of aid being dropped by U.S. military C-130 cargo planes. The first stage of the humanitarian operation saw more than 35,000 meals and aid airdropped on pallets into the enclave, where the United Nations reports one-quarter of the population is just one step from famine.
The White House has said the airdrops will be a sustained effort and that Israel is supportive of the operation.
The militaries of Jordan and Egypt said they also have conducted airdrops.
Israel promises investigation
Biden gave the go-ahead for the humanitarian operation, the first of many, after at least 115 Palestinians were killed while swarming to get supplies from the aid convoys being delivered Thursday. Hundreds more were injured during the mayhem, according to the Health Ministry in Hamas-ruled Gaza.
The Israeli military pledged Saturday it would conduct an exhaustive investigation into the cause of those deaths as international calls for an investigation have grown.
Gaza Health authorities said 118 people were killed in Thursday's incident, attributing the deaths to Israeli fire and calling it a massacre.
Israel disputed those figures, saying most victims were trampled or run over during the chaotic aid delivery.
An Israeli official also said troops had "in a limited response" later fired on crowds they felt had posed a threat.
"It was a humanitarian operation we were running and the claim that we deliberately attacked the convoy and deliberately harmed people is completely baseless," IDF spokesperson Rear Admiral Daniel Hagari told reporters in Tel Aviv adding that it was the fourth such operation in that area.
The incident also points to a collapse of orderly aid deliveries in areas of Gaza under Israeli military occupation, with no administration in place and the main United Nations agency UNRWA rendered inoperative during an inquiry into alleged links of some of its staffers with Hamas.
The latest violence pushed the Palestinian death toll in the nearly five-month war to more than 30,000, with another 71,000 injured and many more missing under the rubble, according to the Hamas-run Gaza Health Ministry.