Democratic Sen. Michael Bennet of Colorado became highly agitated Thursday when questioning Director of National Intelligence nominee Tulsi Gabbard regarding her views of the war in Ukraine and Edward Snowden.

Tulsi Gabbard, Donald Trump’s nominee for director of national intelligence, was repeatedly asked to explain why she sought a pardon for Edward Snowden, the former government contractor who leaked thousands of classified documents revealing the scope of the nation’s surveillance programs.

Senators also questioned Trump’s pick to be director of national intelligence over whether a controversial spying authority needed additional reforms in place.