Rep. Alexandria Ocasio-Cortez, D-N.Y., ridiculed Trump’s son-in-law and senior adviser Jared Kushner for using messaging service WhatsApp to conduct foreign relations.

“I mean every day that we go on without getting to the bottom of this matter is a day that we are putting hundreds if not thousands of Americans potentially at risk,” Ocasio-Cortez said during a House Oversight Committee on Tuesday.