The rebuff from Reince Priebus (ryns PREE'-bus) comes a day before Electoral College members cast their official votes on behalf of Trump.
Democrats are suggesting Trump's win is tainted by Russian meddling. The CIA says US intelligence agencies agree that Moscow was behind the cyber break-in of the Democratic National Committee.
Priebus tells "Fox News Sunday" that intelligence officials "haven't been totally upfront and transparent in their opinion as to who, what, when and how this all happened."
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