Lawmakers had voiced three proposals: curtailing the US involvement in the Saudi-led war against Yemen; suspending all arms sales between the United States and Saudi Arabia and issuing a resolution officially blaming Saudi Crown Prince Mohammed bin Salman for Khashoggi’s killing. READ MORE: Sean Penn Arrives in Istanbul to Shoot Documentary About Khashoggi’s Murder The group of bipartisan senators aiming to strike a deal includes Republicans Todd Young and Lindsey Graham, along with Democrats Bob Menendez and Chris Murphy. © AP Photo / Cliff Owen Crown Prince Knew About Khashoggi Murder, Will Continue to Test US-Saudi Ties – Senator Multiple US Senators have said the complicity of crown prince in the murder is overwhelmingly supported by the evidence in the case. However, US President Donald Trump defended Mohammed bin Salman, stating that Washington was determined to remain a committed partner of Saudi Arabia. Khashoggi went missing during a visit to the Saudi Consulate in Istanbul on October 2. Saudi Arabia initially insisted that the journalist left the consulate unharmed, but later admitted that he was killed and dismembered on the premises. Riyadh insists that the killing was a rogue operation in which the crown prince was not involved.