Dozens of President Joe Biden’s fellow Democrats signed a letter urging his administration to reaffirm that the US strongly opposes “the forced and permanent displacement” of Palestinians from Gaza, Reuters reports.

The letter to Secretary of State Antony Blinken, led by US Representatives Ayanna Pressley and Jamie Raskin, was signed by 60 Democratic House of Representatives members, reflecting concern, especially on the left, over the steep toll on Palestinian civilians of Israel’s campaign.

“We urge you to continue to reiterate the United States firm commitment to this position and ask that you provide clarification regarding certain provisions of the administration’s supplemental humanitarian and security funding request,” the letter said.

A State Department spokesperson said the department does not typically comment on congressional correspondence. But on the broader issue of displacement, the spokesperson said in an email, “We have been clear. There must be no enduring forced displacement of Palestinians, whether inside of Gaza or outside.” The spokesperson said State had rejected statements by some Israeli officials calling for resettlement of Palestinians outside of Gaza and understands from Prime Minister Benjamin Netanyahu that is not the Israeli government’s policy.