President Donald Trump signed an executive order Wednesday to punish protesters who supported Palestine and called for an end to Israel's military onslaught in Gaza, including the potential deportation of non-citizen students and university staff.

The president expanded on a controversial idea that was rejected by the Arab states and would represent a significant shift in U.S. policy.

President Trump said he had spoken to Jordan’s leader and planned to call Egypt’s. Mr. Trump’s suggestion echoes proposals from far-right Israelis. A Hamas official rejected the idea.