The firing and Trump's response early Saturday sparked outrage from Democrats and former members of the intelligence community.
Cambridge Analytica, a company that profiled voters for Donald Trump's campaign, allegedly gathered information on millions via a survey on Facebook.
Dowd said he hopes Deputy Attorney General Rod Rosenstein will choose to end the investigation "on the merits" of the FBI's recommendation to fire McCabe.
Engineers working on the bridge that buckled at Florida International University attempted to warn state officials of cracks on the walkway two days before the deadly collapse, according to transcript released Friday night by the Florida Department of Transportation.
Eighteen-year-old Alexa Duran was driving back from a doctor's appointment with her best friend when the bridge crushed her car.