'Absurd' to read Bolton manuscript in private: Schumer

"What an absurd proposal. It's a book," Schumer told reporters, saying there was no need to read it in a classified setting "unless you want to hide something."

"Our view is simple: we want four witnesses, four documents," he said.

Lawyers for President Donald Trump were set on Tuesday to wrap up their arguments urging acquittal in his U.S. Senate trial as Democrats ramped up their calls for former national security adviser John Bolton to testify about explosive allegations regarding Trump's role in a pressure campaign targeting Ukraine.