"I would expect that Mr. Comey's appearance before the Senate Intelligence Committee will not be his last appearance before Congress. I know the Senate Judiciary Committee has made a similar request of Mr. Comey," Schumer said on Monday.

"I support their request, and I hope he will go before them as well."

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Comey is scheduled to appear before the Senate Intelligence Committee on Thursday, a headline-grabbing event that will mark his first public comments since President Trump made the surprise decision to fire him in early May.

Schumer, as the Senate's top Democrat, is an ex-officio member of the panel. He said he's glad Comey has agreed to testify in a public setting.

"I hope that he's as forthcoming as possible. Transparency and openness is absolutely vital if we're going to get to the bottom of the events of the past few months. And knowing James Comey a little bit, transparency and openness have always been his way," Schumer said.