President-elect Donald Trump is challenging the Obama White House over its public investigation into the hacks of Democrats during the election. “If Russia, or some other entity, was hacking, why did the White House wait so long to act?” he asked on Twitter on Thursday. “Why did they only complain after Hillary lost?” Trump’s comment challenges the president’s motivation for the investigation, after Obama repeatedly promised a smooth transition of power in the White House. Obama defended his decision during an interview with the Daily Show’s Trevor Noah: The reason that I called for a review is really to just...