Democratic Sens. Chris Coons of DE and Jack Reed of Rhode Island also said they were changing their votes, and Sen.
The Canadian measures contain no mention of the Crown Prince, however.
The news comes as the prince continues a tour of Arab states that began last week and as the worldwide community considers sanctions against Saudi Arabia over the assassination of U.S-based journalist Jamal Khashoggi at the hands of Saudi operatives in Istanbul last month, quite possibly on the orders of MBS - a popular shorthand for the prince in Western media. The U.S. has supported Saudi Arabia in the war against the Houthis, an Islamic sect that seized the Yemeni capital of Sanaa and other parts of the country more than three years ago.
The crown prince's appearance at G-20 comes amid an outcry over Khashoggi's killing and the summit will gauge how willing world leaders are to be associated with him following Khashoggi's murder at the Saudi Consulate in Istanbul last month.
He told Al Arabiya News Channel in the presence of Crown Prince Muhammad Bin Salman that the relations between the two countries are historical.
US Secretary of State Mike Pompeo on Wednesday also defended America's support for Saudi Arabia in the Yemen war, warning lawmakers the conflict would worsen without US involvement.
"Two leaders have agreed that we will now set up a mechanism at the leadership level which will go into the possibilities of concrete actions in terms of investment, in terms of technology, in terms of manufacturing across various sectors from energy to food security and to infrastructure to defence", he said.More news: Sarri had one-to-one meetings with players after loss to Spurs
Besides the two, the Prime Minister is also expected to hold a trilateral meeting with US President Donald Trump and Japanese Premier Shinzo Abe amidst China flexing its muscles in the Indo-Pacific region.
US Secretary of State Mike Pompeo and Secretary of Defense Jim Mattis said on Wednesday there was no hard evidence that bin Salman was behind the killing, apparently contradicting an assessment by the Central Intelligence Agency about Khashoggi's death in the Saudi consulate in Istanbul, Turkey, on October 2.
"This case is not closed as far as Canada is concerned.in terms of our continued work to determine for ourselves the facts. And in terms of our review of our own arms exports to Saudi Arabia", she said.
Ms. Freeland, speaking to reporters in Argentina before a Group of 20 meeting, said these new sanctions do not bring to an end Canada's interest in the fate of Mr. Khashoggi. Saudi Arabia is crucial for that process.
Amid mounting pressure on the Trump administration in the aftermath of the killing of Saudi writer Jamal Khashoggi, and as Congress considers a whole range of sanctions bills to punish Riyadh, the administration dispatched Mr Pompeo and Mr Mattis to urge restraint.
Seventeen Saudi nationals have been rendered inadmissible to Canada.
"U.S intervention in Yemen is unauthorized, unconstitutional and immoral, and we must not, we can not delay voting to end our involvement and our support of Saudi Arabia any further", Lee said.