“And you have nothing to hide,” Fox News host Sean Hannity told Trump Jr. during an interview that aired Tuesday night. “That means you'll testify under oath, all of that?"

“All of it,” Trump Jr. responded.

Schumer said Trump Jr. and members of the Trump campaign need to "turn over any and all documents" requested by either special counsel Robert Mueller, the Senate Intelligence Committee or the Senate Judiciary Committee, which are investigating Russia's election interference.

Trump Jr. has previously said he was willing to cooperate with the probe, but had not said whether he would offer hist account under penalty of perjury.

Tuesday , clearly indicated he was eager to accept damaging information about this father’s campaign from Russia, a longtime U.S. adversary. A stunning chain of emails Trump Jr. exchanged with an intermediary while setting up the meeting, which he disclosed, clearly indicated he was eager to accept damaging information about this father’s campaign from Russia, a longtime U.S. adversary.

Trump Jr. insisted he acted appropriately and that the meeting did not yield any dirt on Clinton, while also admitting to Hannity he would have handled the encounter differently.

"They had something — maybe concrete evidence to all the stories that I’d been hearing about, but they were probably underreported for years, not just during the campaign. So I think I wanted to hear it out,” Trump Jr. said.