"As investigators looked into Saipov's history, they discovered that he had been on the radar of federal authorities. Law enforcement officials said Saipov, who is from Uzbekistan, had come to federal authorities' attention after coming into contact with an Uzbek who was under investigation by terrorism investigators in New York."

Sounds like Trump's Dept. of Homeland Security and FBI dropped the ball. Firings of Comey and other leaders who refused to toady to Orange Cheetolini have left the relevant agencies weak, demoralized and disorganized. National security suffers thanks to Trump's politicization of our safety.