Senator Robert Menendez, the top Democrat on the Senate Foreign Relations Committee, has outlined 10 issues that President Donald Trump should bring up with visiting Turkish President Recep Tayyip Erdogan.
Bipartisan legislation and resolutions condemning Turkey's October 9 invasion of northern Syria (three days after Trump removed USA forces from that area) have abounded on both sides of the Capitol, but only the Democratic-held House of Representatives has actually voted on and passed such measures.
Turkey's decision to buy a Russian air defense system has angered the US and other North Atlantic Treaty Organisation allies.
Erdogan, however, was more focused with the issue at home prior to his departure as he warned Brussels from desisting to sanction his nation over the exploration. "That's a message that the president will deliver to him (Erdogan) very clearly when he's here", O'Brien said. European Union should be careful", he warned, adding: "Some countries have started panicking after we began the repatriation process of foreign Daesh terrorists.
The EU's sanction package intends "to sanction individuals or entities responsible for, or involved in, unauthorized drilling activities of hydrocarbons".
Erdogan again used the threat of "opening the gates" to millions of Syrian refugees that Turkey is hosting, and called for greater support, given its efforts in handling militant prisoners.
Asked to comment on the reports, Erdogan said in televised remarks: "Whether they are stuck there at the border it doesn't concern us".
Allies have been anxious that Islamic State militants could escape as a result of Turkey's assault against Syrian Kurdish militia who have been holding thousands of the group's fighters and tens of thousands of their family members.
Germany said one of its citizens had also been expelled.
A USA citizen suspected of being a member of ISIS is reportedly stuck in a heavily militarized no-man's land between the borders of the country that kicked him out, Turkey, and the one that refuses to accept him, Greece, officials say.
France said on Tuesday it will take back 11 suspected French fighters from Turkey. Images showed him temporarily trapped between the two borders early Monday.
Germany's interior ministry said this week that "it did not wish to oppose the return of German citizens".
It has sought to publicise the deportations following criticism of Turkey's offensive against Kurdish fighters in northern Syria last month, which several North Atlantic Treaty Organisation allies - including France and Germany - said would undermine the fight against ISIL.
Denmark will fast-track legislation allowing people with dual citizenship who have gone overseas to fight for militant groups like Islamic State to be stripped of their Danish nationality, Prime Minister Mette Frederiksen said on Monday (13 October).
Amnesty International recently released a report documenting killings, human rights violations and possible war crimes caused by Turkey-backed forces in northern Syria. "I understand the problems that they've had, including many people from Turkey being killed, in the area that we're talking about".
"I never heard this", he said, adding it sounded like "more second hand information."