'Obamagate': Republicans ramp up Trump's new theory with release of information about Biden and others surrounding Flynn calls

Former Vice President Joe Biden, former FBI Director James Comey, former CIA Director John Brennan, and 13 other Obama administration officials all sought the "unmasking" of a person who was on the other end of wiretapped phone calls of then-Russian Ambassador to the US Sergey Kislyak between December 2016 and early January 2017, key Republicans senators announced on Wednesday.