John Yang begins our coverage.

　　JOHN YANG: Top congressional Republicans put themselves at odds with President-elect Trump today, calling for investigations into possible Russian attempts to influence the election.

　　SEN. MITCH MCCONNELL, Majority Leader: Obviously, any foreign breach of cybersecurity measures are disturbing, and I strongly condemn any such efforts.

　　Well, let me just speak for myself. The Russians are not our friends.

　　DONALD TRUMP (R), President-Elect: I think it's just another excuse.

　　共和党内部开撕 支持调查俄黑客助选一事

　　JOHN YANG: On Sunday, Mr. Trump dismissed the CIA's conclusion that the Russians were trying to help him win as ridiculous. He pointed to apparent disagreements between the spy agency and the FBI.

　　DONALD TRUMP: I have great respect for them. But if you read the stories, the various stories, they're disputing. And certain groups don't necessarily agree. Personally, it could be Russia. It — I don't really think it is. But who knows? I don't know either. They don't know and I don't know.

　　JOHN YANG: This morning, he tweeted that: "If the election results were the opposite and we tried to play the Russia/CIA card, it would be called conspiracy theory."

　　Russia is also an issue with a potential secretary of state in the Trump administration, ExxonMobil CEO Rex Tillerson. He's done a lot of business there and has close ties to President Vladimir Putin. That's a reason for concern, say some Senate Republicans, including John McCain.

　　SEN. JOHN MCCAIN (R-Ariz.): Maybe those ties are strictly commercial and got to do with his business in the oil business. Fine. But we will give him a fair hearing. But is it a matter of concern? Certainly, it should be a matter of concern.