Scoop: Democrats say Rafah invasion "likely" violates U.S. military aid rules

What they're saying: More than three dozen House Democrats, in a letter to Biden, cited a memorandum he signed last month requiring any recipient of U.S. aid to provide "credible and reliable written assurances" it will comply with international law.

• An invasion of Rafah, they argued, "would likely contravene" the memorandum, noting the "the absence of a credible plan" to protect civilians.
• The lawmakers urged Biden to "use every tool at your disposal to ensure ... that all recipients of U.S. aid are held accountable to the commitments demanded" by the memorandum.

Between the lines: The signers of the letter, led by Reps. Joaquin Castro (D-Texas), Jamie Raskin (D-Md.) and Jan Schakowsky (D-Ill.), include many senior Democrats and close Biden allies.

State of play: Democrats and Biden officials have expressed concerns that an invasion of the city, which houses more than a million Palestinians, could result in a human rights catastrophe.

• Biden voiced opposition to the Rafah operation to Israeli Prime Minister Benjamin Netanyahu without a plan for ensuring the safety of civilians.
• Negotiations for a temporary ceasefire between Israel and Hamas are ongoing, with Netanyahu saying last week an agreement would delay — but not cancel — plans for the Rafah operation

The big picture: The letter reflects growing concern among Democrats across the ideological spectrum towards the humanitarian crisis in Gaza, which has seen tens of thousands of Palestinians killed.

• Democrats have also faced backlash from Arab American and young voters for their continued support of Israel in its war with Hamas.
• Even some of the most staunchly pro-Israel Democrats have applauded Biden's steps to surge humanitarian aid to the region, including through airdrops.

What's next: Secretary of State Antony Blinken has until March 25 to certify that Israel has signed the commitment sought by the memorandum.

• If the certification is not given, U.S. weapons transfers to Israel would be suspended.