"Seeing as the Trump administration has no intention of insisting on full accountability for Mr. Khashoggi's murderers, it is time for Congress to step in and impose real consequences to fundamentally re-examine our relationship with the Kingdom of Saudi Arabia and with the Saudi-led coalition in Yemen", said New Jersey's Robert Menendez, the top Democrat on the Senate Foreign Relations Committee.
"Turkey's efforts to apply prompt; effective and thorough; independent and impartial; and transparent investigations - in line with global law - had been seriously curtailed and undermined by Saudi Arabia", she added.
"If the President ignores the clear mandate of the Magnitsky Act in a case involving premeditated murder perpetrated by officials of a foreign government, the White House will share the blame for attempting to cover up the crime and for helping those responsible evade justice", Leahy, who was among the group of senators requesting the probe, said.
"I have requested an official country visit to Saudi Arabia so that the authorities there can directly provide me with relevant evidence", she wrote.
Saudi Arabia is denying that the kingdom's crown prince had a role in the killing of a Washington Post columnist amid calls from members of Congress for US sanctions on the kingdom.
The Times, citing unidentified current and former US intelligence officials, said the 2017 conversation was intercepted by USA spy agencies. His remains have still not been found.
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"There is no change in the European Union position, we continue to call for a thorough and credible investigation in line with everything that we have said in the Khashoggi case over the past months", Kocijancic said, asked to give an update on the bloc's position in light of the new United Nations report.
After denying for weeks that Khashoggi was killed in the consulate, Saudi Arabia late past year indicted 11 people in the killing, including members from the crown prince's entourage, and is seeking the death penalty against five of them.
Speaking at the launch of a book about the journalist, Hatice Cengiz also said she believes that Saudi King Salman "has a conscience" and will support Turkey's efforts to shed light on his killing.
Saudi Arabia has refused to extradite its citizens to Turkey after the country issued arrest warrants for several Saudi officials.
Some members of the US Congress have publicly stated that they suspect Crown Prince Mohamed bin Salman was directly responsible for the killing, based on the CIA's conclusions.
So, will anyone be held to account for Khashoggi's murder? And as he has done for the past few months, he referred to Khashoggi's killing as a "mistake".