On his visit to Beijing, as President Donald Trump and Chinese President Xi Jinping wrapped up their joint statements to the press, they ignored shouted questions from American reporters in the Great Hall of the People. When they ducked backstage, Xi summoned his interpreter and posed an inquiry to Trump:

"Who is Roy Moore?" Xi asked.

That moment, described by two White House officials who weren't authorized to speak publicly about private conversations, underscores Trump's domestic challenges. He must grapple with the uncertain fate of his tax cut plan, face the threat of a government shutdown and decide whether to cut ties with Moore, the Republican candidate in Alabama's special Senate race, who is accused of sexually assaulting underage girls decades ago.

For most of the trip, Trump was able to leave domestic affairs behind, though he did reignite the Russia firestorm by revealing that President Vladimir Putin had insisted to him in Vietnam that Moscow didn't hack the 2016 election. Trump added: "And I believe -- I really believe -- that when he tells me that, he means it." Trump later clarified that he was "with" the U.S. intelligence agencies that concluded Russia was behind the interference.