Jared Kushner "may be compromising American interests in ways that we don't know about," a watchdog lawyer said.
"Saudi Arabia has actually been a friend to the U.S. in many ways, right?" Eric Trump said on Fox News.
"I will not have my intelligence insulted or my support disrespected," the Republican senator said.
Cluster bombs are outlawed by 100-plus countries and pose significant risk to civilians.
This is yet another bizarro-world, black-is-white bit of lunacy.
Riyadh hasn't officially commented, but many wonder about retaliation after Congress overrides Obama's veto.
Elevation of Khalid al-Falih seen as message that Saudi Arabia is moving forward with plans to be less reliant on oil profits.
Both Riyadh and Tehran believe the U.S. is actively supporting the other side.
Execution of Sheikh Nimr al-Nimr draws Shi'ite anger across the region.
A new Saudi-led effort has attracted 34 states to counter al Qaeda and ISIS.
Ten million children in the conflict-torn country need urgent humanitarian assistance, UNICEF says.