A group of nearly 90 US House Democrats is urging President Joe Biden to consider halting sales of offensive weaponry to Israel over concerns about continued restrictions on the flow of humanitarian aid into Gaza.

Iran PressAmerica: It comes as increasingly intense pro-Palestinian protests have rocked college campuses across the country, alarming many Democrats.

The lawmakers, led by Reps. Jason Crow (D-Colo.) and Chris Deluzio (D-Pa.), cited a memo Biden signed in February requiring Israel to provide assurances on the preservation of human rights in Gaza.

Among the assurances is that the Israeli regime will "facilitate and not arbitrarily deny, restrict, or otherwise impede" aid into Gaza, or else U.S. weapons transfers would be halted.

Israeli minister for military affairs Yoav Gallant signed a letter providing those assurances in March.

The group of 88 Democrats argued there is "sufficient evidence" that Israel is in violation of the federal law upon which the memo is based.

They pointed to statements from the United Nations' humanitarian affairs office that aid trucks going into Gaza are only half full.

The lawmakers said the State Department should consider a "variety of tools" to force Israel's compliance "from refreshing the assurances to withholding specific arms transfer."