Sen. Ed Markey, member of the Senate Foreign Relations Committee, said today's hearing with Secretary of State Mike Pompeo shed little light on what happened during President Trump's one-on-one meeting with Russian President Vladimir Putin in Helsinki.

"At the end of the day, we now know more about the substance of the conversations between Donald Trump and Michael Cohen than we know about the substance of the conversation between Donald Trump and Vladimir Putin," the Massachusetts Democrat said.

He added: "That's the dilemma that the American people have a right to know what the President is doing in their name in protecting the national security of our country."