WH responds to impeachment inquiry deadline; Dem Rep.: Giuliani is potentially breaking the law; Biden caps off big week with endorsement from John Kerry; Police identify shooter in deadly Navy base attack;

WH faces 5pm deadline to say if it will participate in hearings; Next public impeachment hearing scheduled for Monday; Democratic leaders prepared for impeachment defections; Minutes way: Deadline for White House to announce if it will participate in impeachment hearings; Giuliani confirms he went to Ukraine to dig or dirt on Bidens; White House spokesman on Giuliani: To my knowledge, Giuliani is still Trump's attorney; White House says it won't participate in impeachment hearing; Biden campaign embraces more aggressive tone as Iowa caucuses gets closer;

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