Syria's SDF is unlikely to follow the PKK's lead and disarm, but talks with Damascus could be bolstered.
The Georgetown scholar is among several US visa holders targeted for deportation for pro-Palestine advocacy.
Doha's mediating of conflicts and a purchase of Boeing airliners were areas of focus in Trump's state visit to Qatar.
US federal prosecutors say defendant and co-conspirators got the company to pay for deliveries that never occurred.