Yesterday on "Fox News Sunday," Reince Priebus, President-elect Donald Trump's White House chief of staff, said that Trump "accepts the fact that this particular case was entities in Russia," regarding Russia's involvement in the Wikileaks hack of Hillary Clinton's email. But the effect of that hack on America's presidential election is still disputed, even by the President-elect.

"The Russians have managed to undermine the legitimacy of the next President, which is not going to be helpful," says Bob Baer, former CIA field officer and now writer. "We’re dealing with computer forensics which is very close to dealing with finger prints and gun shots, it’s very close to DNA. It’s an argument that doesn’t work on the Trump side."