US president's nominee for Saudi ambassador defends bilateral ties as lawmakers criticise Muhammad bin Salman.
They are said to collude with doctors and travel agents to fake their medical records.
The Saudi crown prince cements a deal for a refining and petrochemical complex in China.
Analysts say the tour is an attempt by Mohammed to rebuild his reputation after the murder of Jamal Khashoggi.
Some Western countries are also trying to cover-up the journalist's murder, says Turkish foreign minister.
Rahaf Mohammed al-Qunun arrived in Bangkok last Saturday to appeal for asylum.
UPDATED 2.47PM | Rahaf Mohammed al-Qunun, 18, alleges she fled an abusive family and claims she would be killed if she is sent back.
The move comes after US senators received CIA briefing.
This is said to be another recording of a phone call made by the Saudi de facto ruler.
Rights groups say among those affected include women human rights defenders detained in May crackdown.
Sources say they are discussing the possibility of a change in line of succession.
Spy agency has briefed other parts of US gov't, including Congress, on its assessment.
'...Only someone who takes heroin would do this,' Saudi officer allegedly tells President Erdogan.
Saudi Arabia knows journalist's killer is among group who came a day before the killing, President Erdogan adds.
More than 40 nations called for a thorough inquiry and a string of rights reforms.